Three minutes seemed to be long for Xiong Jing, but the generals did not think it was long. They were shocked at the height of the catapult at first, but now they looked at the rotating disc and felt strange. They liked the vertical boom to fall and fix it. Some people who knew a little about mechanical principles, such as the military Sima Peng Zong, finally saw some tricks: this is a bit like a citrus, or a borrowing car for defending the city, but if no one pulled it hard on the side of the boom, the water would not be lifted up.

The same principle is used for borrowing a car. However, the former is used to lift water, and the latter is used to throw stones on the top of the city wall. However, on a seven or eight-meter-high city wall, borrowing a car can only throw stones on a fifty steps, and the flat ground is less than thirty steps, so it cannot be used for field battles. The borrowing car friend in front of me is extremely big, how many steps can he throw stones?

After the boom was fixed, the artillery began to load bullets into the leather pocket. Because the original intention of the design was to be used for siege rather than field battles, and because the metal bullets were small in size, small in flight air, and easy to cast, the catapult only had iron bullets, copper bullets and lead bullets, and the weight was mostly 100 kilograms. This weight was not even the diameter of the iron bullets, and it was then turned by the discs on both sides. Few people saw a 100 kilogram iron bullets installed in the leather pockets connected to the boom, and they only saw the discs turning again.

"It's ready--!" The 'preparation' in Xiong Jing's mouth somehow became the 'preparation' in Gong Yindao's mouth. He waved his hand and signaled that everything was right, then looked at Xiong Jing and asked with his eyes.

"Let it go!" Seeing Xiong Jing nodding from a distance, the worker Yin waved his hand and suddenly released the boom. After the metal sound of "knock", ten tons of counterweight at one end fell down at a rapid speed, and with a "huh--" on the other end, it quickly raised up and brought out a leather pocket equipped with a hundred kilograms of iron bullets. The leather pocket rope was extremely long, so it swung a large circle in the air.

The generals were shocked by the sudden rotating boom, thinking that the big wooden frame was about to collapse. While they were heartbroken, they unconsciously let their eyes follow the boom upwards and go up to the sun in the sky. It was noon, and the sun was slanting, and the light was extremely dazzling. Most people's eyes were stabbed by the sun, and they didn't know what happened behind them. But some people did not see the sun because of their location, but only saw that the Pid Pot suddenly stretched out at the highest point (the hook was removed from the side of the Pid Pot), and a black dot flew forward quickly. They stared at the flying black dot, and after a few breaths, a burst of smoke and dust first stirred up three hundred steps ahead, and then a dull sound of "boom".

"Let it go--!" The two catapults were too close, so that everyone could see clearly that when the first catapult was finished, the ten-ton counterweight shaking left and right, the second catapult began to cast stones. This time everyone saw more clearly. The short end of the boom was quickly down, and the other end flew into the sky with a leather pocket, and then the black spot came out of the pocket. Three hundred steps away, there was another smoke and dust, and a 'roar'.

Xiang Yan remained silent, Peng Zong's face was still amazed, and Xiong Jing remained silent: "Go and take a look."

"Tell the king: the iron catapult is 351 steps..." Before Xiong Jing could reach the landing point, someone had already reported the distance. 351 steps was actually just over 470 meters, which was far enough.

"It's actually three hundred and fifty steps away?" Peng Zong whispered. He thought it was about three hundred steps, which was similar to the effective range of Jingjuan.

"The army Sima can measure it by himself." Xiong Jing was ahead, Xiang Yan followed closely, with Peng Zong and other generals behind him. Everyone was shocked by the range of 351 steps, because they had never shot such a far weapon, except for the Han crossbow in the Zongheng family's mouth.

"I dare not, I am just shocked and thrown away the stone." Peng Zong knew that he had just asked for military power to offend the king, but he was not afraid. The one who gave him a livelihood was Chen Gong, the Yin of Chen County. King Xiong Jing, the king of Chen, could not cross Chen Gong at all, do anything to him.

"Then do you know how heavy the projectile is?" Xiong Jing didn't care about him, just joked with him.

"I don't know, please tell me." Peng Zong said with politeness. The diameter of the iron bullet is about half a foot, and it is not clear to fly in the air. When he thinks of Jing crossbow, he estimated that the stone bullet weighs about dozens of kilograms.

"Yeah. It's about four hundred kilograms." Because one kilogram is equal to 251 grams, Xiong Jing can only say it roughly.

"Four hundred kilograms?" Xiang Yan was also surprised, "Master, this... is really four hundred kilograms?"

"If you don't believe it, you can go and hug me." Xiong Jing smiled, and he felt relieved when he looked at Xiang Yan's expression like he was stepped on his tail.

"The last general dare not, the last general..." The king said that four hundred kilograms are four hundred kilograms, and Xiang Yan could only think so.

"Where is the iron bullet?" When he walked to the landing point where the flag was planted, the iron bullet disappeared. The king Xiong Jing was a little embarrassed.

"Report to the king, the iron bullet hit seven feet underground, and the villain is..." The person who came up to report was covered in mud.

"Have you entered the ground?" Behind him, he was shocked again, and Xiong Jing was shaking his head. This metal bullet was still not good. If it was a stone bullet, even if it was not ejected on the ground, it could crack into several pieces, and the gravel would fly across the rocks, which would rot dozens of miles. "It would be better for a stone bullet." He said to Gong Yindao.

"What the king said is very much. Iron bombs can only be used to attack cities, not to break the formation. Unfortunately..."

After several test shots, Gong Yindao also noticed this, and his eyes were spinning around and didn't know what he was thinking. "It's a pity that the grinding stone bullet was too late at this time."

"Please look, king." The iron bullet that entered the ground was finally dug out. The weight of 100 kilograms was required to be carried by two people. Even if it was lowered, half a hole was smashed on the ground. Now no one doesn't believe the saying of 400 kilograms.

"What do you think of the general?" Xiong Jing asked Xiang Yan, wondering what he thought.

"This thing is very good at sieging the city," Xiang Yan thought of siege when he heard the bullet weighing 400 kilograms. If such a weight hit the wall, no city in the world would be broken. Thinking of this, he was glad that the craftsmen of Chu made this thing first. If it were the sun in Qin, it would have been broken. "If it was used for field battles..." He turned around and looked at the catapult that was one mile away, "it was too heavy, so it would be inconvenient to do it."

"There is no inconvenience." Xiong Jing also looked back at the catapult. Of course he considered the transportation issue when designing it. "It is only seventeen feet wide, and it can be transported on two tracks. Although it weighs 34,000 kilograms, when transporting, it only has the middle bracket. Fifty cows on the avenue can be dragged. It is difficult to pull some of the wild ground, but hundreds of soldiers can be found to pull the fibers."

After the catapult was disembarked, it was transported here, and it was also pulled by hundreds of cows. Xiang Yan nodded after hearing this, "Master, how many stone catapults are there?"

"There are only ten in the military camp, and the other...," only the ten I had made before were brought in, and the rest could only be asked by Gong Yin Dao.

"Report to the king, General, that the third batch of the building is being built, and the second batch of ten are already on the way, and you can deliver it next month..."

"It's not too late next month." There are eight days left this month, and Xiong Jing and Xiang Yan are very clear that they will fight the Qin army in the next month, and it is very likely that within these two or three days, taking advantage of the Qin army's reinforcements not yet firmly.

"Where are the second batch of ten pieces now? Did they go to Xi County?" Xiong Jing asked the second batch.

"It's expired." Gong Yindao's answer once again made people feel disappointed. Qisi is not far from Xi County, but it will take two days. Ten catapults will be disembarked at least one day, and it will take at least two days to reach Yiyi, ninety miles away. If you encounter Qin cavalry in the middle, it will be delayed.

"When will our army go north?" Xiong Jing had to ask Xiang Yan.

"..." This question is really heavy. Xiang Yan's lips moved for a while, and the people walked to a place where there were fewer people. After walking for a while, he said in a voice that only Xiong Jing could hear: "Today and night."

"Today..." Xiong Jing could think of tomorrow at most, but he didn't expect Xiang Yan to set up the camp today and night.

"The Qin army in Chengyang traveled north after noon yesterday, and it can reach Yiyi in four days, and the Qin army in other places will take three to four days." Xiang Yan talked about the itinerary of the Qin reinforcements. "The time I stayed with our army was only three days. Our army was about fifty miles away from the Qin army camp in Yiyi. We will travel twenty miles today to the north of Jiangyi, and we will travel another thirty miles tomorrow, and we will be able to set up a formation to fight the Qin army in the future."

"But the Qin army closed the camp and did not leave, so how about not fighting with me?" Xiong Jing was still the same question as before.

"To be honest, our army is not as good as the Qin army..." Xiang Yan sighed, and when Xiong Jing's face revealed the reality.

In fact, history also has clear evidence: eleven years later, in 227 BC (the 21st year of King Zheng of Qin), Qin was preparing to destroy Chu. King Zheng of Qin asked Li Xin how many soldiers and horses needed, and Li Xin replied, "It's only 200,000 people." When asked Wang Jian, Wang Jian replied, "It's 600,000 people." Later generations then knew that destroying Chu was necessary, but how many people needed to defeat Chu?

Before Li Xin attacked Chu 200,000 people, Chen County, a major town in the north-south expressway connecting the Yellow River and Huai River, was lost, so there is a record of "Changping Jun moved to Ying" in the 21st year of the Qin Dynasty. Chen County is a logistics town, and the loss is equivalent to the gate of the attack on Chu State had been opened. Li Xin and Meng Wu (not Meng Tian) led 200,000 people to "attack Pingyu, attack Yin, and defeat the Jing army... Hui (branch) Chengfu, which was invincible, but because Changping Jun, who lived in Chen County, raised the flag and revolted, the logistics of 200,000 people were cut off, and they had to retreat immediately.

So Xiang Yan led his army to "stop for three days and three nights without stopping, defeating Li Xin's army, entering two walls, and killing the seven commanders." Li Xin was defeated, but what would happen if Changping Jun had not revolted in Chen County?

Destroy Zhao and Wei. Eleven years later, the Qin war machine had been tempered to its best state. It was difficult for 200,000 Qin troops to destroy Chu, but it was not difficult to defeat the Chu army. Xiang Yan, who had always been arrogant, said, "Our army is not as good as the Qin army." It is not a function word. He knew the gap between the two armies well.

"...Today, the war has been taken by the Qin people. Instead of waiting for the 300,000 Qin troops to join forces, it is better to make the Qin army think that I am weak and fight with me first. Since we want to fight, we should go north quickly. What harm will it do to me? Two or three days later, the troops who will reach Huaibei will not exceed ten thousand, so what is the benefit of me?"

The more the situation drags on, the more unfavorable it is. Instead of waiting for the Qin army to assemble, it is better to go north to expect the newly victorious Qin army to underestimate the enemy to fight. In addition to this reason, Xiang Yan has another reason, but he did not say it.
Chapter completed!