Now that you've decided to stay behind and work with the warriors here to deal with the predators in the sky, let's start preparing right away.

Zhao Xinghua understands that the only place where he is better than everyone else here is the dynamic vision that can capture the movement trajectory of high-speed objects when fighting zombies.

The so-called dynamic vision is the ability of the eye to capture, decompose, and perceive the image of a moving target when observing a fast-moving target. Including "instantaneous vision" and "depth of field vision", such as athletes who played combat sports and baseball before the end of the world, as well as airplane pilots, all have special training.

For example, in a combat match, instantaneous vision can help athletes quickly capture the opponent's punches, kicks, feints, momentary gaps, etc., and can quickly react and make instant judgments. There are also excellent baseball players who can see the brand letters on the baseball bat swinging at high speed, and can also capture the direction of rotation and movement changes of the oncoming baseball.

Depth-of-field vision, on the other hand, is the perception of spatial distance. These two abilities are accompanied by the process of capturing images through dynamic vision and the processing of information by the brain in a short period of time, as well as the corresponding reaction processes of the body.

Ordinary people often produce afterimages when they see objects moving at high speed, because the image stays in the human retina for only 0.1 seconds, that is to say, human vision is 0.1 seconds per frame, that is to say, the limit of the object's speed is faster than the limit of dynamic vision, and the brain reaction speed is the decisive key, that is, as long as the image stays in the retina for a shorter time, the faster the object can be captured.

Under normal circumstances, entering this state requires a high degree of mental concentration, and the world in the eyes will slow down, just like the slow-motion effect in the movie, when the scene in front of you is slower, the faster the brain will run, and the slowdown of time is actually the result of high-speed analysis and calculation of the brain, and if you enter this state for too long or too often, the brain will quickly get tired, and even produce headaches, which is a kind of pain that is not physical exertion.

Zhao Xinghua had already mastered this instantaneous vision in fencing in the past, but the time to enter this state was very short at that time, and the speed of the object in his eyes was also limited, and this ability was also strengthened with the evolution of his body. The biggest problem for other people is the speed, and it is difficult for others to capture the trajectory of the Saker at high speed in the air every time without instruments, coupled with the relationship between the spatial distance between the two, it is impossible to lay a good amount of advance and launch the bullet to the position where the Saker is about to appear.

By the way, with regard to the operation of anti-aircraft machine guns and anti-aircraft guns to shoot at aircraft, anti-aircraft guns do not use shells to shoot at planes directly, but multiple artillery positions form artillery positions, and multiple artillery positions form artillery groups, and radar or other firing command methods fire shells in front of the aircraft's predetermined route, and when the shells explode at a specified time or height, they form dense fragments to destroy the aircraft.

However, in the current state, the radar or photoelectric fire control system equipped with the multi-barrel anti-aircraft artillery system cannot be used, and if the manual control of the anti-aircraft gun cannot accurately play the time difference and advance equivalent, it is impossible for the cannon to fight mosquitoes. Even if it really hits, it's the same reason as waiting for the rabbit, the blind cat hit the dead mouse, and it can only be said that the falcon is too unlucky, but unfortunately this kind of thing has not happened so far.

The same is true for anti-aircraft machine guns, at a distance of one or two kilometers from the aircraft, it takes one or two seconds for the bullet to reach the target object moving by the eye, and during this time, the target object still continues to move at high speed, and it is impossible to hit it with aim. It is still necessary to bridge the time difference in advance and block the forward route of the aircraft with a chain of high-speed launches. However, in modern warfare, aircraft have rarely dived to the effective range of bullets below 2,000 meters, and with the armor of the fuselage, the anti-aircraft machine gun may not even be able to break through the gear glass at a long distance, and generally only plays a deterrent role.

During the 1979 war in southern Xinjiang, the Vietnamese fired our volunteer anti-aircraft machine guns horizontally, which was the first to use this kind of weapon on people. The range of the high machine is much longer than that of rifles and light machine guns, and it is often helpless for light infantry who are not equipped with artillery. Its projectiles are so powerful that ordinary pillboxes can't stop them. In the end, anti-aircraft weapons turned into sharp weapons for ground warfare, and it was not until our army subsequently transferred a large number of anti-aircraft machine guns that the situation was reversed.

As soon as this Pandora's box was opened, all the guerrillas followed suit. In 1987, Libya and Chad fought. The Chadian soldiers in the desert mounted Soviet-made "Deshka" anti-aircraft machine guns on Toyota pickup trucks and fired them flat, hitting and running, and actually used this trick to defeat Gaddafi's well-equipped tank troops. This war thus earned the reputation of the "Toyota War".

What Zhao Xinghua was holding in his hand at this time was a domestic W85 anti-aircraft machine gun, full weight: 43.2 kg, body weight: 19.65 kg, gun frame weight: 18.35 kg.

The W85 Type 54 anti-aircraft machine gun (which is the imitation of the Soviet Deshka M36/46 anti-aircraft machine gun mentioned earlier) is the most important export model of light weapons in China, and it is the fist product of China's arms trade. Since its sale to the outside world in the mid-80s, the W85 heavy machine gun has traveled to dozens of countries in Africa, the Middle East, West Asia, Southeast Asia, South America, etc., and has sold tens of thousands of units, and has participated in almost all wars in the past 30 years. Especially in the battlefields of North Africa, the Middle East and South Asia, it is known as a Chinese weapon as excellent as the domestic 107 mm guerrilla rocket artillery. As we all know, the domestically produced 107-mm rocket launcher, together with the Soviet AK-47 rifle and the RPG-7 40-mm rocket launcher, was once called the "three sharp weapons" of the world's guerrilla warfare. And the influence of the W85 heavy machine gun in foreign countries is no less than that of the above-mentioned weapons.

However, this machine gun was not installed in the domestic army, and the Chinese army chose a lighter Type 89 general-purpose machine gun, which weighed 20 kg lighter than this one, which was more convenient for soldiers to carry and fight. Due to its small size, short length and small slewing torque, the W85 gun body was selected as a tank machine gun in our country and was named the QJC88 12.7 mm vehicle-mounted machine gun to equip the troops.

The reason why Zhao Xinghua chose this infantry lawn mower in war-torn areas, the favorite of the rebels of various countries, and the stupid guy that no one wants to touch in the warehouse is because of its high rate of fire and fierce firepower, and the difference in weight of 20 kg in his hands is not big.