Zhang Jiashi has a question, that is, Zeng Gongliang, one of the compilers of the "General Essentials of the Martial Arts", where did he know that Wu Zi and his grandson knew each other.

However, thirty years after Sun Wu's death, Wu Qi was born, and it was obvious that this was impossible......

The more credible date of Wu's departure from the state of Chu is 387 BC, and it is very likely that Pang Juan of this period had not yet joined the state of Wei or was just an "unknown person".

Moreover, Sun Bin became famous much later than Wu Qi became the first general in the early Warring States period, even if he wanted to ask for knowledge in this area, it can be said that Sun Bin asked Wu Qi for advice rather than the other way around.

And what is going on with this matter, Zhang Jiashi said that he had to ask Zeng Gongliang to know......

In the "General Essentials of the Martial Arts", there are also descriptions of water warfare and the use of gunpowder weapons:

Horizontal, the wooden trough is two feet four inches long, and the two ends and the middle are chiseled into three pools, the pool is one inch and eight minutes wide, one inch and three minutes wide, one inch and two minutes deep, and the pool is one foot and five inches apart. There is a canal between them, which is two minutes wide and one inch and three minutes deep.

According to the plate, it is shaped like a square fan, four feet long, two feet black, two feet white, three feet wide, and the handle is one foot long, which can be held.

Its rod is reflected in the version, and the three floating wood teeth and the plate are squinted, and the size of the rod is high, and the size is multiplied. The height and depth of hills, ditches, and water can all be measured.

In the Spring and Autumn Period, Wu used the boat division to attack Chu; the Yue army and Wu army fought in the river, Wu Zixu fought against Lu, and taught the Northern Army the method of the boat army, the big wing, as the army's car, the small wing, as a light car, the sudden attacker, as a chariot, as a building boat, as a building car, as a bridge boat, as a light hussar. The public loses like a self-reckless Chu, which is the tool of boat warfare, which is called the hook rejection, the retreat is the hook, and the advance is rejected.

All water battles of warships are equal to the size of the ship, and the number of victories is based on meters, and one person does not weigh more than two stones. The sail is light, and the golden drum flag is the festival of advance and retreat. In its battles, there are building boats, fighting ships, boats, and sea falcons; in its submarine attacks, there are Mengchong and yachts; and in its weapons, there are slapping rods for its use, so that they can be attacked by going downstream. The armies regard the flag of the general, the flag in front of the sub, the drum, the advance, the flag stands, the smell of gold, the stop, the flag is returned. If the vanguard, the tour and other ships are surrounded by thieves and need foreign assistance, they will regard the general as a red flag and advance to the thief's point. At each point, a ship advances; before the flag, if it is not raised, the warship retreats; and the flag is inward, at each point, a ship retreats. If Zhang is suspicious, he will set up flags and sails in Puniguang to confuse him. This is also rough.

The one who shoots the rod will be given to the big ship. Each ship was made of five floors, a hundred feet high, with six poles, and fifty feet high, with eight hundred soldiers, and a banner to be added. Every time the enemy ship is pressing, the shooting rod will be fired, and the ship will be shattered. Sui Gaozu ordered Yang Sufa Chen, confident Zhou Xiaxia, build a big ship named Wuya Ship, five floors, more than 100 feet high, left and right front and back six beat poles, and 50 feet high, accommodate 800 soldiers, the flag is added. The second time was called Huanglong, and there were 500 soldiers.

Meng Chong, with the back of the war ship with raw ox leather, left and right to open the air, arrows and stones can not be defeated. There are crossbow windows and spear holes in the front and back, and they are cast when the enemy is close. This does not need a big ship, it is necessary to build it quickly and take advantage of the unpreparedness.

The walkers, the side of the ship stands on the female wall, there are many husbands, and the soldiers are all selected to be brave and elite. Round-trip is like a flying gull, beyond the reach of people. The golden drum flag is in.

The sea falcon has a boat-shaped head and a high tail, with a large front and a small back, like a falcon. The left and right sides of the board are placed on the floating plates, shaped like falcon wings, to help the boat, although the wind and waves are angry, but there is no rolling. The back is covered with raw cowhide, which is the city tooth flag and the golden drum as usual.

Where an army crosses the water, and there is foam flowing to it, it must be determined, and if the water does not rise, it will be crossed. Gai is worried about the rise of the water halfway, or the captives are suppressing the flow, and they want to destroy our army.

Where the general crosses, ahead of the shore on all sides of the array, still ordered to ride high and look far away, in order to wait for the cavalry to probe it, to prevent the cover of the attack, and then the detachment to rotate.

Where rafts, it is said that bamboo and wood and houses can be destroyed as rafts and rafts, and can also be used.

Where the cold wants to help, the flow is not combined, and the giant rope is used to cross the water surface, and the flow must be self-combined, which can be helped.

Pu rafters, with Pu Shu nine enclosures, upside down into ten, bound like a bundle of guns, the length of the measurement. No cattails, with reeds. It is possible to float.

Those who float the sac are filled with muddy sheepskin and blowing, tie it empty, tie it to the armpit, and float to cross.

Wooden poppies, bind urns and poppies as rafts. The urn is better than one person. The urn contains five inches, the lower is connected with a rope, the gun is braided, the shape is long and square, the raft (or version) head is placed in front, the rear is slightly placed, and the left and right are placed.

The art of fire attack says: "There are five fire attacks, one is the fire man, the second is the fire accumulation, the third is the fire carature, the fourth is the fire storehouse, and the fifth is the fire team." "The so-called burning man, burn his camp fence and his soldiers, and attack him in horror, and he will be defeated. The so-called fire accumulators, burn their food and salaries, and the army will not survive. The so-called firefighters, the instruments, goods, and sergeant's clothes are not stopped.

He also said: "Fireworks must be furnished." "It is said that the genus of Artemisia grass, salary, and anointing oil are all prepared. There will be a time for fire, and there will be a day when a fire will start. The time is dry. The day is to stay in the kei, the wall, the wing, and the wing.

The art of war says: Lead the troops deep into the enemy's territory, encounter the jungle and deep grass in front and behind the army, the three armies are far away, the men and horses are tired, and they have no time to stop. The enemy burned the wind because of the wind, and the sharp soldiers lay behind me. If so, burn the grass and trees before us to stop the fire, and burn the back to repel the enemy. Our army is in a position of black ground, and the ranks are strong, and the enemy cannot harm them.

Apricots, grinding apricots empty, with Ai Shizhi. Capture dozens of hundreds of birds in enemy cities and warehouses, tie the feet of the birds with apricots, and add fire. In the twilight, the group flew into the fortress to live, and its accumulation of houses was on fire.

The fire beast is placed in the scoop with Ai fire and four holes are opened. Tie the scoop to the wild boar and roe deer neck, needle its tail end, indulge it to the camp, run into the grass, and the scoop is defeated. Ancient law also. Use the ox, the front arm of the spear, its blade outward, with birch bark, fine grass into the tail, drive its head to the enemy, fire, the ox shocked and run forward, the enemy will be chaotic, can take advantage of it. In ancient times, there were flints and fire horses, and their methods were slightly the same, and they could all be used.

The fire thieves chose people with the appearance and voice of the enemy, and stole the trumpet at night, and then stole into the camp with fire, and burned them to accumulate. The fire was fired, and the crowd came out in chaos and attacked it with soldiers.

Three catties of gunpowder are used in the smoke ball ball, and the outer Fu Artemisia is heavy, about one catty, such as the fireball method, the order of the Fu is thick, and the cone is burned through when used.

Whatever is burned and should be burned, and is shot with a rocket, or a bow, or a crossbow, or a bed crossbow, and is placed far and near, the law is seen in attacking and defending and apparatus gates.