In front of him is an endless battlefield, the battle flag is Xiao Xiao, the corpses are all over the field, Zhao Kuo is holding a long sword on the horse, there is not much left of the new army around him, not far from the fallen is the corpse of Lei Meng and others, in front of him is a black pressure on a large army of the Qin army, constantly rushing up to kill, the war horse neighed, Zhao Kuo took off the longbow behind his back, there was only one bow and arrow left, he couldn't help but snort coldly and threw it directly at his feet, the long sword in his hand shook and roared, "Rush!" ”

With the sound of the wind in his ears, countless bows and crossbows were shot, pain, pain that he had never felt before, his chest was full of arrows, and the heavy armor could not stop the king of the cold weapon era.

A figure was quickly overwhelmed by the army of the Qin State.

Zhao Kuo woke up suddenly, sat up, the long sword was beside him, the hilt of the sword was held in the palm of his hand, a qiē was so familiar, the hilt of the sword was put down, it was just a nightmare, leaning against the wall, recalling the scene that emerged in the dream, I didn't want to be so real, as if I was in it, that day I saw the terrible place of the Qin army in a battle with Hu Xian, the combat power was strong, not afraid of life and death, and it was also a little lucky to be able to achieve victory, occupying the advantage of the terrain, the main general of the Qin army, Hu Xian was too light, and the enemy was finally defeated. What if you meet a stronger opponent?

Zhao Kuo got up, a round of full moon hung in the sky, the moonlight through the window lattice, eyes fell on the table, the cloth bag was tied with a knot, and what was placed inside was the hard work of his father Zhao Hao, the military book left by the soldier saint Sun Wu, which recorded the key to restricting the victory or defeat of a battle, the glyph of Wu is composed of the words "stop" and "ge", and it is martial arts to stop Ge. The ancient book of soldiers says that "there are seven virtues in martial arts", that is, force can be used to prohibit violence, eliminate war, maintain strength, consolidate meritorious deeds, stabilize the people, harmonize the masses and enrich wealth.

Sun Wu specialized in the art of war all his life, and his family collection of books "The Book of War of the Yellow Emperor", "The Art of War of Taigong", "The Book of Fortune after the Wind", "The Book of Changes", "Military Chronicles", "Military Administration", "Military Rites", "Order", "Book of Zhou", "Laozi Soldiers", "Shangshu Bingji", "Guanzi Art of War" were finally formed after drills.

Zhao Kuo looked through one or two, and suddenly felt jerky and difficult to understand, if everyone can understand the subtlety, how can it be called a work of earth-shattering ghosts and gods, so he had to put it aside to be carefully studied, fortunately, he had read the great leader Chairman Mao's art of war, and he also elaborated on Sun Tzu's art of war.

Zhao Kuo stepped forward and stroked it gently with his hand, with a coolness on the book, a scorching sun sword left by his father, a military book, enough to see the expectations in his heart, hoping that Zhao Kuo could become an admirable man and a commander who dominates the world.

Hand on the waist, with a silk scarf, followed by a square cloth, wake up from a nightmare, the oncoming arrow made Zhao Kuo remember that he was carrying a thing on his body, with various patterns painted on it, it was the weapon map copied from the hands of the Bing League that day, it should have been burned, but there were still a few places that could not be penetrated, so he secretly left, took it in his hand and carefully observed it by the moonlight, and his eyes fell on the bow and crossbow.

The crossbow is a kind of cold weapon in ancient times, and it is an important part of the ancient military vehicle warfare method. It is a weapon used by infantry to effectively restrain cavalry. The crossbow is also called the "nest bow" or "cross bow". A weapon used to shoot arrows in ancient times. It is a bow equipped with arms, which mainly consists of parts such as a crossbow arm, a crossbow bow, a bowstring, and a crossbow machine. Although the crossbow has a much longer reload time than the bow, it has a longer range, stronger lethality, higher hit rate, and lower requirements for the user, making it a powerful long-range killing weapon in ancient times. The range of the strong crossbow is up to 600 meters, and the range of the extra-large bed crossbow is up to 1 km.

What are the advantages of crossbows compared to bows? The first is to increase the tension. The bow must be stretched with both arms, and the archer controls the bow with one hand and pulls the string with the other, so that its tension cannot exceed the strength of a person's arm. The crossbow is different, not only can be pulled with both arms, but also can be pulled with the back of the bow, with the strength of the waist and even the whole body, at that time this method of pulling the crossbow was called "tension". Later, there were even car crossbows that put several strong crossbows on the bed frame and used several people or more than a dozen people to pull the strings at the same time.

When shooting an arrow with a bow, the archer draws the bow with both hands and the eyes must aim at the same time. But it is impossible to draw the bow with both hands for a long time, and the aim of the eyes is rushed. When using a crossbow, you can pull the crossbow bow apart in advance, apply the arrow, when it is aimed at the target, when the trigger is fired, and the crossbow machine is equipped with a special sight - Wangshan, you can shoot more accurately.

The use of concentrated operations, the first crossbow is good, choose a favorable time, the general gives an order, all the crossbowmen are fired at the same time, so that the enemy is caught off guard and causes a huge blow, and the opponent's psychology is also deterred, this method of warfare, is the nemesis of the horse chariot, the horse chariot arose in Zhou, the most common in the Spring and Autumn Period, four horses driven, soldiers are located in the car, armed with spears to attack, because of their own defects, the chariot is too bulky, it is more difficult to control, only suitable for plain battles, plus the appearance of more mobile cavalry, The tank gradually withdrew from the stage of history.

The front of the crossbow has a transverse hole to hold the bow in place so that the bow does not move from side to side, and there is a grooved arrow path on the front of the wooden arm for placing a cluster of arrows, so that the fired arrow can move in a straight line. There is a box at the back of the wooden arm, called a crossbow machine; There is a hook with strings in front of the multi-purpose crossbow box, called a "tooth"; Behind the teeth are sights mounted and are called "lookout mountains"; A trigger is attached to the underside of the tooth, called a "suspension knife". When firing, first pull the bowstring back, hang it on the hook, put the crossbow arrow on the arrow path, aim at the target, buckle the hanging knife, the tooth will be retracted, the bowstring hooked by the tooth will pop out, and the arrow will shoot out.

Zhao Kuo got up and reached out to remove the crossbow from the wall, put the arrow from the front and hung it on the bowstring, pulled it away hard, and hung it in a fixed position at the back, let go of his left hand, and with the hook, there was no need to worry about the crossbow arrow being sent out inadvertently, as long as he didn't pull the trigger, nothing would happen.

The bow and crossbow are flat, you can see the front from the gap above, the arrow is straight and smooth to ensure that the direction of the arrow is not blocked by external forces, pull the trigger, snap, the crossbow arrow is shot, the crossbow body then pops back, the crossbow arrow is nailed to the door panel, the speed is extremely fast, such a close distance, if someone directly shoots an arrow at himself, he may not be able to dodge, the role of the bow and crossbow is to catch people off guard.

The crossbow machine in the middle of the Warring States period, although the hanging knife, hook, tooth, etc. have been made of copper, but there is no copper Guo, and the crossbow machine is directly mounted on the wooden crossbow arm, which cannot withstand too much tension. In the late Warring States period, the crossbow machine was equipped with copper and strengthened the machine groove, and this part was produced to meet the needs of tension.

Zhao Kuo's figure returned to the table, his eyes fell on the weapon map, the bow and crossbow on it hid two arrows, it can be seen that the military alliance must create a bow and crossbow that can instantly send out two crossbow arrows, the lethality will inevitably increase, it is precisely this that attracts Zhao Kuo, the number of bows and crossbows in the new army is very limited, coupled with the constraints of strength and other factors, the combat power is limited, and the battle with Hu Wound still saw the horror of the bow and crossbow that day, the sky is full of rapid fire, the Qin army is killed and wounded, and the arrows are terrifying, Is it possible to develop a crossbow that is easier to handle and can also fire more arrows at once?

Zhao Kuo's eyes lit up, his figure stood up, and he muttered, "Why did you forget this!" After speaking, he hurriedly picked up the pen and ink, he had seen the Zhuge repeater pattern in the present world, although he could not draw it accurately, if he could depict a few important parts, and the soldiers of the alliance might be able to improve it.

Just do it, Zhao Kuo frowned, carefully drew the crossbow body, compared to the ordinary bow and crossbow is more wide, so that more crossbow arrows can be placed, the mystery of the crossbow is that you can quickly add arrows to achieve the purpose of continuing to hit the opponent, otherwise the ordinary bow and crossbow can only be completed by manpower, the time is much slower than the bow and arrow, the opportunity on the battlefield is fleeting, once the cavalry approaches the crossbow soldier only the fate of being washed in blood.

After drawing the crossbow body and looking carefully, it seems that something is still missing, trying to recall the scene at the time, how can it be too long to remember, only so, the biggest flaw of the bow and crossbow is that it takes a lot of effort to install the arrows, why not use the principle of leverage, increase the way of the force arm, draw a crossbar, always not enough, and draw another one, which is wound with ropes, and the interaction of two levers will inevitably increase efficiency.