The Northern Song Dynasty was extremely concerned about the secret weapon of the Tang Dynasty. Jinling, which had a population of hundreds of thousands, was captured almost a month, which made the Northern Song Dynasty extremely frightened.

You should know that Jinling is a major city in the south. It has been the capital of many years. It is much stronger than Kaifeng, which has been through decades. In other words, Kaifeng was originally a commercial city. It was born to guard the canal and was completely large and difficult to defend.

Therefore, as soon as the catapult car asked about it, this retro siege method immediately attracted the attention of Tokyo, and then began to visit and improve.

The catapult was found in the Spring and Autumn Period and the Warring States Period. The Art of War of Fan Li recorded: "The flying stone weighed twelve kilograms, and was launched for the aircraft, and took three hundred steps."

There were no wheels at that time. In the late Eastern Han Dynasty, Cao Cao's army transformed a catapult with wheels, also known as a throwing car and a thunderbolt chariot, showing its power.

After the development of the Wei, Jin, Southern and Northern Dynasties, the "torch" of catapults that can rotate left and right appeared. By the Sui and Tang Dynasties, catapults had gradually become popular.

When Shi Siming attacked Taiyuan City, Li Guangbi created a giant stone-firing cart fired with 200 people. Each stone bullet could kill and wound dozens of people, causing Shi Siming to return in a defeat.

Since then, China's catapult cart has added wheels, rotated, and has a larger scale, with hundreds of people operating.

However, its disadvantages are also very obvious. This catapult cannot attack the city wall at all.

Because it is a human stone thrower that uses manpower to pull the tip (the tip) connected to the crossbar at a place far away from the stone thrower, and then dozens of people pull back and put the stone out as soon as they are put.

For example, when the Jin Dynasty attacked Bianliang, hundreds of catapults were fired day and night, and stone bombs almost filled the moat, but they still did not break the wall...

The advantage of the reflux cannon is that it uses the lever principle to modify the catapult car? Moreover, Li Jia also added pulleys to make it have greater projection ability.

For example, a catapult cart had a maximum of 10 or 20 kilograms on the roof, but after adding pulleys, a huge rock that could throw hundreds of kilograms had an effective range of two or three hundred steps? Even Xiangyang City, which had been withstood for decades, could not bear it and collapsed.

This is also the reason why the Mongols refused to sinicize, because they conquered too many countries and had many choices?    How many other civilizations are not inferior to the Southern Song Dynasty?         Especially in war.

However, due to the improvement, the Tang Dynasty cannot be called a catapult, but should be called a catapult.

So although the Song people did not understand why the catapults were so powerful, there was no shortage of talents among the Han people? After several improvements, they finally improved a lot.

This battle between the north and the south? The catapult should be considered the largest in the past century.

Wang Shenqi ordered the military camp outside Yangzhou city? Nearly a hundred catapults began to appear? Loading and unloading? Many tents were evenly dismantled, revealing mountain bags piled up with stones.

It can be used as a suspicious soldier and hide stones, which can be said to be a killing of two birds with one stone.

"This person is really capable." Li Xin looked at the monocular telescope and couldn't help but nodded, "It should be an old army, but why haven't I heard that Wang Shenzhi, the man in Song State."

"Report——" At this moment, a sudden communist said, "There is no suitable stone in the vicinity of ten miles,"

"Huh?" Li Xin frowned and shook his head and said, "This Song man is indeed a little hard to do, but he is too naive."

"But some difficulties will not make me difficult."

"Go, let someone demolish those small and useless houses in Xiaozhou City, first demolish them from the yamen, and send the money we took out from other prefectures and counties..."

"In addition, hurry up and let the people of Xiao Zhoucheng make mud bombs for me, and they will use them tomorrow-"

After the catapult cart was improved, the dilemma of stone was naturally thought of. After all, most cities are on plains. It is better to directly build mud bombs and fire them in a furnace cellar, and continue to flow.

"I don't believe that your stone bullets can have more than mine."

Li Xin was quite confident.

The power of the cannon is almost the same as that of the stone throwing cart, or even to some extent, but it is better than the stone throwing cart controlled by hundreds of people, so the stone throwing cart is enough under Yangzhou city.

But if you attack Shouzhou and Luzhou, and stay away from the Yangtze River waterway, artillery cannons will come in handy.

In particular, artillery also requires gunpowder and consumes a lot. Compared with the navy who prefers artillery, he prefers stone throwing cars.

No one else, watching the two or three hundred kilograms of stones thrown out, the pleasure was so pleasing to the eye, and I like the enemy's surprise expression and despair after the solid city wall was broken.

Basically, once the city wall is broken, the enemy will be frightened, the morale will suddenly fade, and the one side will rise sharply, and just kill it with the flow, which is extremely convenient.

However, Yangzhou City cannot be surrounded, and there are military camps outside the city that should be connected outside. If they are not removed, the stone-throwing cart will be attacked and cannot be deployed.

Therefore, Wang Shenzhi must die, or flee back to Yangzhou City to wait for death.

Whether it was a stone throwing cart or a Song army's catapult cart, it was large in scale and many parts, and loading and unloading was extremely troublesome. With this action between the two parties, Li Chuyun in the city learned the result and hurriedly went to the city to check:

"Why didn't General Wang attack the catapults in the local area?"

"General Wang has only 20,000 troops, and the enemy has nearly 50,000. The cavalry has just tried a little and was beaten back." The general next to him said quickly.

"The Southern Kingdom actually has more catapults than General Wang. It seems that he is prepared and fully prepared, so that the craftsmen in the city will come over and see what is different."

"Also, let the troops near the city gate prepare for the support, just in case."

Li Chuyun calmly ordered that if the catapult battle is won today, the enemy's offensive will at least be successful. If it is defeated, it will really become an isolated city.

He really wanted to know how powerful the Tang army was in the catapult. There were dozens of defending cities in the city. If it was really powerful, then he had to prepare more.

Once prepared, it was only three hours from morning to afternoon, until it was only one hour before dark.

Li Xin climbed up and looked up, and was confident about his own stone throwing cart. He said: "According to the news from the Shooting Department, the Song people's catapult cart is at most 200 steps away, but we can reach 300 steps away, and the distance is 200 steps away, so don't be careless."

"Deployment, you won't be able to do it after two hundred steps." The commander of the stone throwing car said with a tough bullet.

"As long as they can't beat us, we don't have to pay attention to accuracy. Just demolish the camp for me. Remember, we must demolish it. Tens of thousands of us have already buried the pot in advance to make rice. We just finished eating and are waiting for use!"

"yes--"
Chapter completed!