What safety matters should college students pay attention to in winter vacation? Please keep this guide.

  Zhongxin. com, January 18 th At the end of the year and the beginning of the year, the winter vacation is coming. While everyone is enjoying the holiday, the safety issue cannot be ignored. What are the safety matters that need to be paid attention to when studying in school, practicing practice and traveling during holidays? Yesterday, Weibo, the official of the Information Office of the Ministry of Education, issued the "Safety Guide for College Students’ Winter Holidays", reminding college students to beware of illegal organizations such as pyramid schemes, choose regular recruitment/part-time websites, and pay attention to personal information protection.

  Detention safety article

  When staying in school during the holiday, students should know the arrangement of logistics service during the winter vacation in advance, and strengthen the study of safety knowledge such as fire prevention, theft prevention, fraud prevention and food hygiene, and strengthen the awareness of safety prevention.

  Guard against stealing, robbing and cheating

  Lock the dormitory doors and windows when you go out, take care of your valuables, and especially don’t lend your documents to others easily. Don’t store a lot of cash or leave valuables in the dormitory or on your body.

  Prevent problems from not "burning"

  Pay attention to the safety of electricity use, turn off the power in time when you leave the dormitory, do not go to bed with computers and appliances, do not pull and connect wires in the dormitory, do not use high-power appliances, and do not make a fire in the dormitory to prevent winter fires. Call 119 as soon as possible because of an electric fire.

  Abide by dormitory management regulations

  Don’t stay with the opposite sex and foreigners, don’t rent out beds to others, and don’t store flammable and explosive materials.

  Pay attention to the safety of daily life

  Keep the dormitory environment clean and tidy, and dry clothes and bedding frequently; Indoor ventilation should be frequent to promote air circulation and prevent diseases. Pay attention to keep warm and cold, exercise diligently, ensure nutrition, avoid overeating and pay attention to food hygiene.

  Healthy and civilized internet access

  Rational use of the network, reasonable arrangement of time, not indulging in the network; Beware of online fraud and abide by online ethics; Protect property safety, don’t indulge in online games and video games, and don’t contact or participate in unfamiliar online games, live broadcasts, QQ groups, WeChat groups and post bars.

  Practice safety article

  During the holidays, many students choose to find internships, but the peak season of winter internship is also the peak of fraud. At the same time, college students should protect themselves and guard against being cheated.

  Choose a regular recruitment/part-time website.

  College students must log on to the official recruitment website and be wary of "employment agencies" and "employment agencies". Before submitting their resumes, they must inquire about the company’s relevant information and judge its authenticity.

  Pay attention to the protection of personal information

  Some personal information on your resume need not be too specific, such as mailing address, but should focus on your work experience. Be alert to all kinds of telecom fraud and online fraud, and report to the police in time when problems are found.

  Beware of illegal organizations such as pyramid schemes.

  Be alert and stay away from pyramid schemes, which usually have one or more of the following characteristics: when you join the club, you are told that one of your duties is to develop more people; Pay an expensive membership fee; Many people are in high spirits in the workplace. If pyramid schemes are identified, college students should immediately stop working and call the police in time.

  Take care of your finances

  When you go out for an internship, you should not carry too much cash with you, leaving only a small amount of pocket money. Generally, you should not give your luggage to someone you don’t know.

  Choose a regular lodging place.

  If you want to stay in a hotel or guest house with a business license and regular management, you can give valuables to the service desk for safekeeping, don’t go out alone at night, lock the doors and windows when you sleep, and don’t sleep in a room with strangers.

  Choose tutoring through formal channels.

  Looking for tutoring through schools, acquaintances and formal intermediaries, we should not trust small advertisements and other unidentified tutoring information. The first time you go to a student’s home to give a lecture, please be accompanied by your classmates, and then get to know the parents of the students before you can continue on the basis of ensuring safety. When you go out as a tutor, you must tell your classmates the other person’s home address and telephone number, and tell them the time to return to school, in case of other circumstances, you can contact your classmates in time.

  Travel safety articles

  The winter vacation is coming, and I believe many college students have arranged travel plans. Although travel is full of novelty, it is inevitable that there will be security problems. Therefore, whether traveling together or going home for the New Year, students must do a good job in safety protection.

  Don’t put valuables in conspicuous places.

  When traveling, it is best not to carry a lot of cash and valuables, and the backpack must be placed in a conspicuous field of vision, or given to a companion.

  Take a legally qualified vehicle.

  When choosing a chartered car service for travel and tourism, you should choose vehicles and drivers with legal operation qualifications, and don’t take the "black" bus that attracts tourists privately. If you are in doubt about the condition of the vehicle, you can ask the transporter to show relevant certificates. Don’t take an illegal "black" bus because of greed and cheapness.

  Do not take overloaded and overcrowded vehicles.

  Don’t go out in vehicles that are overloaded and mixed with passengers and goods. Vehicle overload seriously affects the braking and handling performance of vehicles, and is prone to safety accidents such as brake failure. For your own safety, you must not take chances and take overloaded vehicles because of preferential prices and quick arrival.

  Minimize going out in bad weather.

  In winter, freezing, rain and snow are frequent, and the road surface is slippery. Travel should check the weather of the destination in advance, reduce going out in severe weather such as fog, rain and snow, and pay attention to safety.

  The mobile phone must be kept open.

  Before leaving school, you must inform the counselor, roommates and parents of your personal whereabouts and contact information, and keep the communication tools open so that you can find out in time and help solve the problem.

  Beware of overly enthusiastic strangers.

  Do not trust strangers’ words and deeds, and do not drink or eat strangers’ drinks and food easily; Don’t casually accept strangers’ bags, buy tickets, look after things and other help. For college students who are not deeply involved in the world, it is indispensable to guard against others.

  Communication security article

  With the coming of winter vacation, college students need to be alert to high-incidence telecommunication network fraud such as booking fraud, online shopping refund and high-paying recruitment. What are the characteristics of these frauds? Learn with Xiaobian.

  False booking

  Criminals use portals to make fake web pages of online booking companies, publish false information such as booking air tickets and train tickets, and lure victims into being fooled by lower fares. Later, he asked for another remittance to commit fraud on the grounds of "incomplete identity information" and "frozen account number".

  Refund of online shopping goods

  Criminals took advantage of college students’ online shopping for a large number of goods during the Spring Festival, pretending to be online shop customer service staff to make phone calls or send text messages and falsely claiming that the goods taken by the victims were out of stock and needed a refund, demanding bank card numbers, passwords and other information to commit fraud.

  High-paying recruitment

  Criminals take advantage of students’ eagerness to practice during the winter vacation, and recruit online staff such as online shop customer service staff, typists, and people who brush traffic through the Internet with high salaries to commit fraud on the grounds of paying deposits and deposits.

  Loan installment shopping

  Criminals send short messages in groups, saying that they can provide loans or purchase goods by installment for those who are short of funds, with low monthly interest rate and no guarantee. Once the victim believes it, the other party will commit fraud in the name of prepaid interest, deposit, etc., and will face high interest if it fails to do so.

  online game

  Criminals use online games to buy and sell game coins and equipment. After defrauding players’ trust, players are allowed to send money offline, and they will not trade after they get the money. Criminals post information on the game forum, get the remittance and game account provided by the player, and embezzle it together with the account for a day or two.

  Tips

How many of these technologies from NASA have you seen?

  Today viewpoint

  Aerospace gives people a special feeling of "high cold", which reminds them of advanced fighter planes and magnificent space stations that ordinary people can’t see, touch or use.

  A few days ago, the well-known American website "GOBankingRates" took stock of 25 kinds of technologies originated from the National Aeronautics and Space Administration (NASA) in our daily life, which spread all over our "food, clothing, housing and transportation". They come from the distant sky, but they are convenient for our daily life.

  Food: baby milk powder, freeze-dried fruit, food safety packaging.

  At present, more than 90% of infant formula in the United States contains microalgae. It was originally the product of NASA research, the purpose of which was to test the potential use of algae as an oxygen "recycling agent" in space travel.

  Freeze-dried fruit is a common snack. However, the purpose of NASA’s development of freeze-drying technology is to make the fruits in the Apollo mission easier to carry, and this technology can maintain 98% nutrition with 20% quality.

  In order to ensure the safety and quality control method of space flight food development, NASA has now become a food industry standard to protect the food safety of consumers all over the world.

  Life: memory foam mattress, scratch-resistant lenses, anti-ultraviolet sunglasses, cordless vacuum cleaner, Nike air-cushion sports shoes, space blankets, ski boots.

  Comfortable memory foam mattress can fully fit the human body and relieve stress, which is necessary for many families. Memorable foam was not originally used to make mattresses. It was originally developed by NASA to cushion the impact of spacecraft landing on astronauts.

  Compared with ordinary glass, scratch-resistant lenses have a longer life. In fact, the scratch-resistant coating is a "by-product" accidentally discovered by Jet Propulsion Laboratory (JPL) under NASA when researching the diamond hard coating for aerospace.

  In 1980s, two scientists from JPL developed a kind of welding glasses, which can absorb, filter and scatter the strong light emitted during welding. Later, this technology was widely used in anti-ultraviolet sunglasses.

  Initially, Black&Decker was ordered to develop a portable device for Apollo and Gemini missions, which was used to extract samples from below the surface of the moon. This technology has been improved to become a "cordless vacuum cleaner".

  Nike air-cushioned sneakers use the patent of "Blow Rubber Molding" obtained by M. Frank Rudy, a former engineer of NASA. The initial application target of this technology is spacesuit.

  The space blanket is insulated and heat-preserved, which is an essential item for survival in the wild and marathon. But it was originally developed by NASA to protect spacecraft and astronauts at low temperatures.

  In addition, the technology used by NASA in the joints of spacesuits has been improved and used in ski boots, which improves the athletes’ control ability in skiing.

  Home: swimming pool purification system, household heat insulation materials.

  In order to resist the extremely low space temperature, NASA made an insulating material called "radiation barrier" from aluminized polyester. According to JPL, aluminized polyester is now used in most household insulation materials.

  In 1960s, NASA developed an electrolytic silver iodide filter to provide clean drinking water for astronauts, and now it is widely used to purify swimming pools.

  Travel: aircraft deicing system, precision GPS, anti-skid groove on highway, better tires.

  According to NASA’s technology transfer plan, civil aircraft can fly in cold weather, mainly due to a thermoelectric deicing system called Thermawing developed by NASA.

  Many mobile phones are equipped with precision GPS technology developed by JPL, and its data comes from JPL global GPS receiver network. Even if there is no wireless connection, you can still use GPS positioning on your mobile phone.

  NASA’s Langley Research Center has developed anti-skid slot technology to prevent aircraft accidents on wet runways. Later, this technology was widely used in expressways.

  In 1970s, Goodyear Company developed a new tire material for NASA Viking Mars probe, which was used in parachute system. This technology was later used to improve ordinary tires, increasing their life by 10,000 miles.

  Electronic products: mobile phone camera, notebook computer, high-power solar cell, wireless headset, mouse, CAT scanner.

  In the 1990s, NASA asked JPL scientists to make a miniature camera that can be installed on spacecraft while ensuring the quality of photography. According to JPL, one-third of mobile phone cameras now use this technology.

  According to the Smithsonian National Air and Space Museum, "Grid Compass" is the first notebook computer in the world. It was first used in the space shuttle mission in 1983, which is one of the inventions of NASA.

  The crystalline silicon solar cells used in the home originally came from the lightweight solar energy system developed by the Environmental Research Aircraft and Sensor Technology Alliance under NASA for electric aircraft.

  NASA has developed wireless headphones for astronauts to facilitate their communication. Now this technology has entered thousands of households.

  According to JPL, a NASA researcher developed a computer mouse in the 1960s, which allowed users to operate on the computer screen and made the computer more interactive.

  JPL initially developed a CAT scanner to scan aerospace components to get advanced digital images to detect defects. Now, it has become a commonly used medical instrument.

  Medical care: cochlear implant, invisible dental appliance, ear temperature thermometer.

  Adam Kiser, an engineer at Kennedy Space Center, used his working experience in electronic, sound and vibration sensor systems in the space shuttle project to develop early cochlear implants by using electric pulses instead of sound amplification technology.

  Compared with the traditional metal appliance, the invisible dental appliance is more beautiful. It is made of transparent polycrystalline alumina, which was originally developed by NASA to track heat-seeking missiles.

  Nowadays, many parents use ear thermometer to measure the temperature of sick babies or young children. According to JPL, this thermometer adopts infrared dissection technology invented by NASA and Diatek.

  There is always one of these 25 technologies that you have seen, touched and used. Aerospace technology can not only be used in high space, but also improve our quality of life after landing, which is one of the driving forces for human beings to explore and fly higher and farther.

  (Science and Technology Daily, Beijing, July 8 th)

This book guides the war of resistance to victory.

  On May 26, 1938, Comrade Mao Zedong delivered a speech at the War of Resistance against Japan Research Association in Yan ‘an.On protracted warHis long speech set up an ideological beacon to guide the whole nation to victory in the war of resistance against Japan.

  This is in 1938, Mao Zedong wrote "On protracted war" in Yan ‘an caves. Xinhua news agency

  At that time, the national anti-Japanese war had been going on for 10 months. With the loss of large areas of land in North China, East China and South China, the crisis of national subjugation and extinction was like a black cloud covering the land and people’s hearts — —Will China die? How long will the Anti-Japanese War last? How can we win?The whole China society can’t find the right answer.

  It is in this dark and confused background that Mao Zedong seriously refuted it on the basis of profoundly summarizing the experience in the early stage of the Anti-Japanese War."theory of national subjugation"The absurdity,"theory of quick victory"Illusion of"Desperate Theory"The recklessness has clarified the direction and path, boosted morale and strengthened the confidence of the people throughout the country to win the Anti-Japanese War.

  Once On Protracted War was published, it not only caused a sensation in Yan ‘an, but also had a great impact on the whole China society. General Wang Zhen later recalled: "Those of us who directly participated in the battle on the anti-Japanese battlefield were encouraged by our eagerness to read oil lamps on the heatable adobe sleeping platform between battles. A glorious "On Protracted War" inspired and guided us to win the great victory of War of Resistance against Japan. " Even some Japanese people were impressed by On Protracted War. Professor Kondo Bunkang of the University of Tokyo declared: "We admire On Protracted War. It is inevitable that Japan will be defeated by China. Japan does not have such a grand strategic vision based on philosophy. "

  Today, let’s reread this historical epic of more than 50,000 words and feel the surging power contained in it.

  Refute the "national subjugation theory" and "quick victory theory"

  Before and after the outbreak of the National Anti-Japanese War, there were two wrong views: First,"China will die", the second is"China’s theory of quick victory".

  "China will perish" existed before the outbreak of the national anti-Japanese war. Some people said, "China’s weapons are not as good as people’s, and the war will be defeated". After the beginning of the national anti-Japanese war, there was an argument that "fighting again will lead to death". Wang Jingwei Group, a pro-Japanese faction of the Kuomintang, is an outstanding representative of the theory of national subjugation.

  Others underestimate Japan and think that Japan can’t hit Shanxi. During the Battle of Songhu, Chiang Kai-shek’s clique counted on Britain, France, the United States and other countries to intervene and asked the Soviet Union to send troops. Therefore, some people arbitrarily thought that the Sino-Japanese war would be solved as long as it lasted for three months, the international situation would definitely change and the Soviet Union would send troops.

  At the beginning of "On Protracted War", these two wrong views were analyzed and criticized, pointing out: "Their way of looking at problems is subjective and one-sided, in a word, unscientific."

  The scientific conclusion is that War of Resistance against Japan is a protracted war and China will win.

  Why a protracted war? Why does China win?

  In On Protracted War, Mao Zedong comprehensively investigated and demonstrated the objective basis that China can and must win through a protracted war of resistance.

  The enemy is strong and we are weak.Japan is an imperialist power with great war power, and China is a semi-colonial and semi-feudal weak country, which determines that Japan’s attack can run rampant in China for a while, while China cannot win quickly.

  The enemy retreated and we made progress.The war launched by Japanese imperialism is unjust and retrogressive, and its crazy war adventure will only aggravate its internal contradictions and lead it to extinction. China is in a historical period of progress. With the broad masses of people who have realized and are realizing, the Communist Party of China (CPC) and the Chinese Red Army, our strength will become stronger and stronger.

  The enemy is small and I am big.Japan is a small country, and its manpower and material resources are not enough to support a long-term war. China is a big country, which can make use of its vast territory and large population to support a long-term war.

  The enemy’s lack of help helps me to get more help.Although Japan is supported by the international fascist countries, it is bound to be opposed by international forces because it pursues the policy of aggression and expansion and threatens and harms the interests of other countries. China, on the side of justice, is bound to get the support of the international community and finally win the war.

  In May 1938, Mao Zedong gave a report on protracted war at the People’s Anti-Japanese Military and Political University in China, Yan ‘an. Xinhua news agency

  War of Resistance against Japan goes through three stages.

  The first stage, strategic defense.At this stage, the Japanese attack and China defense. Our mobile warfare is the mainstay, supplemented by guerrilla warfare and positional warfare.

  In the second stage, the strategy is deadlocked.Due to the shortage of troops and our stubborn resistance, the enemy will have to stop the strategic attack and turn to the stage of conservative occupation. This stage is the longest and hardest, and the growth of our strength is mainly at this stage. At this stage, our main combat mode is guerrilla warfare, supplemented by positional warfare and mobile warfare. Mao Zedong also criticized the tendency to despise guerrilla warfare in his book.

  The third stage is the strategic counterattack.Through the efforts in the stalemate stage, China’s strength will change from weak to strong, which will fundamentally change the balance between the enemy and ourselves, and War of Resistance against Japan will be able to enter the stage of counterattack to recover lost ground. To win in the counter-offensive stage, we must not only rely on our own strength, but also rely on international strength and the assistance of internal changes in the enemy country. The main war situation at this stage is mobile warfare, and positional warfare will play an important role, supplemented by guerrilla warfare.

  This is part of Mao Zedong’s book On Protracted War, which was published in 1938. Xinhua news agency

  Soldiers and civilians are the foundation of victory.

  For whom and on whom? It is the touchstone to test the nature of a political party and a political power, and it is also the foundation to determine whether an army has combat effectiveness.What is the root that determines the victory of the Anti-Japanese War?"On protracted war" gives a clear answer: soldiers and civilians are the foundation of victory.

  Mao Zedong pointed out in "On Protracted War": "The deepest source of the great power of war lies among the people.The Japanese dare to bully us, mainly because of the disorganized state of the people in China.Overcoming this shortcoming, we put the Japanese invaders in front of our tens of millions of people who have stood up and made it like a horse.野牛冲入火阵,我们一声唤也要把它吓一大跳,这匹野牛就非烧死不可。”

  “这个政治上动员军民的问题,实在太重要了。我们之所以不惜反反复复地说到这一点,实在是没有这一点就没有胜利。没有许多别的必要的东西固然也没有胜利,然而这是胜利的最基本的条件。抗日民族统一战线是全军全民的统一战线,决不仅仅是几个党派的党部和党员们的统一战线;动员全军全民参加统一战线,才是发起抗日民族统一战线的根本目的。”

  百万倭奴压海陬,神州沉陆使人愁。

  内行内战资强虏,敌后敌前费运筹。

  唱罢凯歌来灞上,全中全力破石头。

  一篇持久重新读,眼底吴钩看不休。

  这是1965年叶剑英重读《论持久战》后,感慨万千,深深为毛泽东的远见所叹服,欣然提笔写下的一首诗。这首诗,生动地反映了这部经典著作的历史地位和现实意义。站在新的历史起点上,深入学习贯彻习近平新时代中国特色社会主义思想,必须进一步学好马克思主义哲学,学好毛泽东思想,掌握科学世界观和方法论,为实现中华民族伟大复兴、实现共产主义远大理想持久奋斗!

  来源:求是网

  策划:李文阁 周昭成

  编制:曾嘉雯

  审核:李文阁 闫玉清

  监制:李达

The pace is wrong, and everything is in vain! Five basic steps of disassembling badminton learning

Most amateur badminton lovers don’t have a good foundation, not only their skills are not perfect, but many people can’t even distinguish the most basic steps clearly, let alone skillfully use them. Therefore, on the court, we often meet golfers who are "confused and tired into dogs". If we want to improve this situation, we must learn from the most basic pace. Today, we are going to disassemble five basic steps that are common in learning:Starting step, merging step, crossing step, stepping step and jumping step..

Strictly speaking, the starting step is not a step, but a nerve reaction. For example, when you are startled by surprise, your nerves suddenly tighten and your body will contract immediately. The starting step is the reaction of nervous tension and body contraction after seeing the opponent’s return ball, which is to better prepare for the next move. It is worth noting that:The starting step is only available when you are paying attention and actively moving your body.If you relax and don’t care about the return of the ball, there is no such subconscious action.

The function of the starting step: tighten the body and prepare for the movement; At the same time, it can also lower the center of gravity and change the direction.

Chen Yufei lowers his center of gravity.

Chen Long changed direction.

Most of the forms of starting steps are legs apart, jumping in place, etc., but no matter which form is used to remind the body to enter the moving state, from the preparatory action to the moving state, so we see that in professional competitions, many players jump in front of almost every step and constantly use the starting step. As shown below:

Step by step can be said to be the most commonly used moving gait, which can be interpreted literally as: the step in which the hind feet are close to the front feet. Take the right-handed racket as an example, and the step is to move the left foot together with the right foot. When the left foot touches the ground, the right foot continues to move forward, and the left foot comes together again, as shown in the following figure:

Parallel internet access

Step back

It can be seen that whether surfing the Internet or going backwards, you can choose to step in parallel. In the process of moving, the knee slightly bends to slightly lower the center of gravity, which can make the body more stable and is also conducive to the final shot; At the same time, stand on tiptoe and touch the ground to speed up the movement.

The above step is that the hind feet are close to the front feet, and the front feet drive the hind feet to move; The cross step is the cross movement of feet, just like our daily running, but it is not easy to master the cross step because of the uncertain moving direction on the field, and novices may trip if they don’t pay attention.

Cross steps can be divided into front cross and back cross. Generally speaking, many people are willing to adopt the way of back cross, which is convenient for the back foot to push the ground and the front foot to have more opportunities to change direction when moving. As shown below:

Anterior crossing

Posterior cross

It can be seen that the movement of the right foot is limited by the left leg and it is not easy to change direction at the front crossing; Then the right foot is more likely to change direction when crossing; At the same time, the left foot will push harder and move faster when crossing back. But as I said before, the back cross is easy to trip, so you should master it before using it.

By comparing the parallel step with the cross step, we can find that the cross step moves faster, while the parallel step moves more frequently. On the whole, the two steps perform well on the court and can be used in combination. In addition, according to the editor’s observation, long-legged athletes prefer cross steps, while ordinary athletes use parallel steps more.

Pedal stride is mainly used when hitting the ball on the internet. Whether it is step by step or cross step, the last step of surfing the internet will be pedal stride, which can not only speed up the speed to grab the hitting point, but also make the body land more stably, which has the stability of hitting the ball with the hand. Therefore, the importance of stepping is self-evident.

Literally, stepping is to step forward with the front foot and the back foot on the ground. As shown in the figure below, after the crossing step, there is a pedaling step to surf the Internet:

This seemingly simple stride is not easy to learn. You should master the following three core elements:

1、Right foot (stride foot). When landing, the right foot should land with the heel first, and the toes should face the direction of the ball and outward. The advantage of doing this is to make the right foot land more stable, thus making the whole body more stable. As shown in the figure below:

2、Left foot (foot pedal). The power of the left foot is the power source of the right foot stride. The greater the power of the left foot, the greater the stride distance, which is why the stride will be combined with the cross step. Because of the long stride distance, after the right foot strides, the left foot will slide forward with the body, and the inside of the left foot will slide on the ground by friction. As shown below:

3. Knees. Many golfers say that playing ball hurts our knees. In fact, our exercise is within the range of our body’s tolerance. The reason for the injury is that our movements are not standard and our own maintenance is not enough. When stepping forward, the legs that stride forward bear a huge impact, and the pressure on the knees is very great, so we should pay attention to one thing:The angle between thigh and calf must be greater than 90 degrees.That is, the knees do not exceed the toes.

If the included angle is less than 90 degrees, the impact on the knee will be greatly increased, which is very harmful to cruciate ligament and soft tissue. Professional athletes rarely have this way of catching the ball. For amateurs, we should pay more attention to this in order to reduce injuries.

In addition to stepping in front of the net, there is also a stepping in the backcourt. The action is the same as that in front of the net, but the direction is different, as shown in the following figure:

The simple understanding of the jump step is the take-off step, which has two forms:Take off in front of the net to save the ball, take off in the back court to hit the ball.

When you save the ball in front of the net, because the time is short and the opportunity is rare, you must be fast, lean forward and jump forward. The main action is to jump forward. When the body leans forward, the center of gravity is all on the right foot, and the right foot is used to jump forward, as shown in the following figure:

The advantage of jumping is that it is fast, and you can hit the ball in only one step. No matter how fast it is, it is not so fast. This is the advantage of jumping. The same is true for jumping shots in the backcourt, which can quickly catch the right hitting point, whether it is killing the ball or dropping the ball, it will give the opponent a certain threat.

Jumping backward to hit the ball is more common among male athletes. Using the strength of the arm to hit the ball, the body does not turn, so that the speed of hitting the ball is fast and the hitting point is higher. If you move to the position and then hit the ball, the hitting point is already very low and there is no lethality. Jumping backward requires certain leg strength and skills, which is an advanced skill for amateurs. As shown in the figure below:

These are the five basic steps commonly used. Except for jumping, starting step, merging step, crossing step and pedaling step are the steps that badminton lovers must master. Only by learning these basic steps and then mastering the combination of various steps can they move in an orderly way on the court and avoid the embarrassing situation of "being walked into a dog by the opponent". I hope this article will help you!