Chapter 307

"General Yu said, let the city master have a look, but there's something that can replace ox tendons. Now it's cold and the ox tendons are hard, so it's not strong enough to twist with ropes, so..."

Lu Qing nodded. She understood. Yumingchuan wanted to ask her if she had elastic and strong materials to replace cow tendons.

Seeing Lu Qing nodding, Li Ji's eyes lit up.

"Lord Lu means, yes?"

"No."

Lu Qing said frankly.

Li Ji's face drooped in an instant. Why didn't you nod?

But he didn't dare to get angry. His eldest brother confessed that he dared to disrespect the city Lord and break his leg.

"Then I'll go back to the camp first and tell General Yu that the Lord of the road city didn't replace the beef tendon." Li Ji repeated truthfully and wanted to say so. Although there was no disrespect, I didn't know whether she would be angry if she set the value of Lu Qing.

But even if he was angry, he didn't cause it. He just said a fact, which she personally admitted.

"Well, just tell him so." Lu Qing pulled the tendon again. It was hard and had no elasticity at all, but she really had nothing to replace the tendon. Even the elastic materials of later generations would lose their effect because of the problem of temperature. Moreover, she couldn't make it at all now.

The change of spring is small, but it also needs alloy spring with good toughness, which can withstand low temperature. Besides, there is no fart here. Even if she wants to be a spring, she has no conditions.

Seeing that Lu Qing was not angry, Li Ji was immersed in thinking. He couldn't help wondering. This Lu Cheng master is really strange.

"This catapult is of no use to you now. Stay here and I'll have a look." Lu Qing waved to Li Ji and let him go.

Li Ji was embarrassed again, especially when Lu Qing waved to him.

This woman, why don't you understand any etiquette?

Pressing down the unknown fire in his heart, Li Ji respectfully saluted Lu Qing, and then took people away.

After Li Ji left, Lu Qing fell into meditation again.

She really doesn't understand the catapult. She only knows that it is used to attack the city. She has seen it in movies and TV dramas.

However, looking at the catapult, Lu Qing remembered the slingshot.

They all use elastic force to launch the stone with a stretch.

However, why are many of the catapults in her memory not a stretch, but a bang?

Gunpowder?

No, it was a cannon with gunpowder. What she heard was a bang, like something fell down.

However, she couldn't figure it out. Launching a stone had something to do with what fell.

Yunluo also looked at the catapult and saw Lu Qing thinking hard. His eyebrows were twisted into a pimple and looked quite funny.

"Lu Qing, do you know that Li Ji just wanted to humiliate you, but he refrained from saying."

"Ah? Who humiliated me?"

The train of thought was interrupted by Yunluo. Lu Qing heard Yunluo say that someone humiliated her.

"Li Ji, that boy despises you and deliberately says you can't solve the problem of ox tendon. It's estimated that you'll have to tell Yu Mingchuan that you're not right."

"I can't solve it. There's no way. He can tell the truth. I don't want to give people inexplicable hope at this time."

Lu Qing shook his head helplessly. Now is not the time to show off.

"You are really like a little sheep." Yunluo shook her head. Sometimes the girl is smart to death, sometimes she has no idea, especially when thinking about these strange things.

Is this why both Yu Mingchuan and Zhang Dan are infatuated with her?

"Don't talk nonsense. You just interrupted my train of thought. You're so smart. You have to think of a way for me." Lu Qing pulled Yunluo's red robe, wrung his eyebrows and pursed his lips.

"What method?" Yunluo glanced at Lu Qing helplessly. You can't think of a solution. Can I?

"If you don't use ox tendons or ropes, how can you pop up a stone!"

"This..." Yun Luo's eyebrows also wrinkled. Can you say with a slingshot? But the slingshot also needs ox tendons

"If you think of it, I'll open a small stove for you!"

"Really?" Yunluo's eyes lit up in an instant. He's been eating Qianjin cakes these days. He's tired of it. It's best to change his taste.

"Of course, really, go."

Lu Qing drove Yunluo away and began her meditation again.

How did that bang happen?

She was sure that it was not the sound of hitting the city wall, but the sound of launching.

At dusk, Yunluo ran back to the camp. His face was full of joy. For the first time, he got into the earth house where Lu Qing lived.

"Lu Qing, I have a way!"

Lu Qing was stunned. Is there a way? So fast?

"What way, tell me?"

"What do you say? Go find a stone pillar. It's best to be half a person high, and then find a board. I'll tell you how to do it."

Yunluo smiled more and more like a fox who stole a chicken, and his eyes were bent.

"Huo Jing, get ready!" Lu Qing was very curious. What can stone pillars and boards do? Should we use boards to pop up stone pillars? That requires the elasticity of the board to be quite good, or it will break in an instant

Huo Jing's speed was very fast, but in a moment, he prepared a long wooden board and a rough stone pillar.

The cloud fell around and looked for a small stone. Then the stone column stood up and the board was placed flat, so that Huo Jing stood on one side of the board.

"You put this stone at your end. Don't let the board press down. Carry it first."

Yunluo tells Huo Jing that although Huo Jing is a little upset, he still does it. Now is not the time to lose his temper.

"Lei Yin, come here and pick up the board here with your greatest strength."

Yunluo pointed to the other end of the board and let Lei Yin pass.

The displeasure on Lei Yin's face became more obvious. Just when he was about to say something, he heard a scream.

The scream came from Lu Qing, who had never screamed before.

When Yunluo asks Lei Yin to jump to the other end, she knows what Yunluo wants to do!

Lever!

It's the lever principle!

"Lei Yin, jump up!" Lu Qing stopped screaming and shouted.

Before Lei Yin could recover from Lu Qing's scream, he saw that she began to let him jump. For the sake of her first scream, he jumped reluctantly

As soon as Lei Yin jumped on the other end of the board, Huo Jing obeyed Yunluo's order and loosened the board.

Suddenly——

The stone flew directly out of the auxiliary barracks!

At this moment, all the people who saw this scene were stunned, and then suddenly realized.

This method can really throw stones far away, and there is no need to use ox tendons or ropes!