With Lin Meng's return, the drawings of Yang Zizong and Wang Zongwei were drawn one after another. When the drawings were handed to Qing Cang, he looked at them for a while and had a expressionless face, as if he was thinking about the problem.

He put the drawing of the city car in front of the sand table.

"Come here, let's brainstorm. You see if there is anything that needs improvement in this drawing."

At the same time, he pointed to the city on the sand table, and the rows of wooden blocks in front represent the city-rushing car.

"We need to improve it according to the actual situation. How to make the city-rushing cars safely rush to the city gate, our personnel will lose less. This is very important because we don't have many troops. We can only use these equipment to complete it for us."

If this is the case, it will be quite difficult. Lin Meng looked left and right and expressed his confusion, "It's better to kill people than to see this. Commander, I can't tell you five, six, seven or eight. I won't participate!"

Qing Cang was not able to solve Lin Meng's experience, but Zhang Liao shouted: "I think you can't stay idle either! Why not bring tea and water to the man to drink!"

Lin Meng said instead: "Brother Zhang speaks, then I'll do it."

He wouldn't be talking nonsense if he did something. He went downstairs and prepared to leave.

After watching the eight people on the spot for a while, Qing Cang first asked Yang Zizong: "Do you think the structure of your rushing car is solid?"

Yang Zizong said proudly: "My whole vehicle uses a mortise and tenon structure, which can resist violent impacts. It uses a hundred kilograms of stone to smash it from a height of ten meters without cracking."

The mortise and tenon structure is a common structure used in ancient wooden buildings in China. This structure basically does not require a single iron nail. It special processing of the wood, connected and extremely sturdy.

The city bus is drawn three meters high, which is the same size as a small bus. It is completely driven by people, and the same is true when it hits the city gate.

He then asked the others because Yang Zizong must be full of confidence in his things, and these rushing cars have also been tested by many battles of all sizes, and the quality must be guaranteed.

"How do you think the structure needs to be changed?"

Perhaps because the three armed battalion commanders saw too much of this kind of rushing car, they were very impressed. After watching for a long time, they still couldn't find any variable place, so they didn't say anything.

But Wu Chaojing asked a question. "I think the whole car is most afraid of open fire. Once it encounters a fire, it will be a catastrophe."

Zou Wei nodded and said yes, he had seen several major siege battles. "Yes, if this rushing car hits a fire, it will almost be scrapped. Not to mention siege, it will be burned to ashes before it reaches the city."

Wood has this disadvantage, but there seems to be no other material that is more suitable except for it.

Xu Xun said, "But if you don't use wood, just like other materials, it's definitely not as light as wood, and it's quite troublesome to process it. It's so heavy that if you want to push it, the number of people you need will naturally increase. The troops are all here, and they are equivalent to being exposed to the enemy's attack range, and the casualties will probably increase."

Speaking of this, no one cares whether the design is reasonable or not. Everyone has been using it all the time, and that’s it. Maybe it’s because of simplicity and ease of manufacturing.

At this time, Qingcang remembered the car. Although it was made of iron, its outer skin was iron, which could still shelter from wind and rain.

"Let's do this, let's add a layer of iron to this city bus. Xu Dezhi!"

"exist!"

"Can you find iron sheets that are evenly thick?"

"Go back to the commander, this is OK."

"So, can it be built like this thick?"

He took out a piece of wood that was about two millimeters in size. Because in ancient times, the unit of measurement was very different from that in modern times, he didn't know how to describe these two millimeters, so he took something to compare.

"Thinner than this one is OK."

"Okay, I'll talk about my opinion. You guys said it well just now. But I have my ideas. If there is something wrong, you can raise it."

Qing Cang took a pen and drew a cut surface of the eaves on the new drawing, and then extended it to form a roof.

"This is a roof, wrapped in thin iron sheet, which can protect the safety of the promoter. It can also prevent fire, but it will not be too heavy and create a burden."

Wu Chaojing patted his thigh and said, "Why didn't I expect that I could actually be wrapped in iron sheets. If that's the case, the Chongcheng car could directly ignore the fire attack. By the way, the wheels also need to be added with iron sheets! The Chongcheng pillars must also be wrapped!"

"Staff General Wu said it well. The wheels must be wrapped in iron. In order to prevent the enemy from rushing to destroy them, I also suggest that some weapons must be installed around the rushing car. As the car moves, once it encounters the enemy, they will be unable to get close."

Zou Wei also participated and said, "In this way, you will be invincible wherever you go!"

Yes, such a city-rushing car is like a harvester, and you can harvest everything wherever you go.

When people thought it was over, Qing Cang continued: "Also, this is under the responsibility of Battalion Commander Wang. I don't need manpower. I plan to use horsepower to put the horses in the city rushing car and drive them."

Zhang Liao, who had not spoken just now, also echoed: "Good idea, so that the remaining soldiers can be free, which is equivalent to using horses to complete the city-torn mission instead of soldiers!"

Wu Chaojing gave a thumbs up and said, "Yes, that's it. Why didn't I expect that the commander is the real adviser, he is really tall!"

Qing Cang is standing in a different position. He must grasp the overall situation and cooperate with modern thinking, so that what he can think will naturally be more extensive. If nothing unexpected happens, this plan will be decided.

Just as everyone responded to Qing Cang's words, a voice was not very sociable and said, "I think it's inappropriate to use horses."

Qing Cang was excited. "Oh? Xu Xun, do you have a better way?"

Loomingly, this man named Xu Xun seemed to be more suitable as a staff officer than Wu Chaojing, but Qing Cang would not let him replace Wu Chaojing, at most he would only be at the same level, and all contradictions must be predicted in advance. Moreover, when the team grew, these literati would be assigned to their respective legions.

Xu Xun explained: "The so-called "knowing horse power from a distance" has another meaning, that is, the horse has strong endurance and its explosive power is lower. What if it is used to use a cow? I have seen a cow explode when it explodes wildly. One cow can overturn three horses. Furthermore, using a horse is too wasteful. This horse contributes much more to the battlefield than a cow. In addition to killing it as a meat, it is also used to plow the fields."

Xu Xun always quotes some allusions and poems when speaking, which makes people feel that this person is very talented.

"Xu Xun's words make sense. Captain Wang, write it down and let Yang Zizong and Xu Dezhi cooperate with you to complete the first sample! We have determined the function. As for how to do the best, it is your responsibility!"

"Yes, Commander!"
Chapter completed!