Author: big bell

This question raised everyone's doubts. Building bridges is not uncommon. Iron smelting has long been used in production, but iron is rarely used in building bridges. The reason is not that iron is not hard enough or that it is more fragile than wood, but that iron is rarely used in bridges.

Although iron is hard, it is easily damaged and cannot achieve the best effect of building a bridge. On the contrary, wooden bridges are more durable.

Also, for such a long distance, it is still made of wooden pillars and wood. Not to mention the danger, it cannot be soaked in water for a long time.

This is relatively general, and for this bridge, it doesn't seem to apply.

Li Zhao smiled when he heard this, but he didn't hide it.

"This is the iron smelted in my iron smelting workshop, it is not comparable to ordinary iron."

This statement immediately attracted everyone's interest. They are also smelting iron, so why is their iron different from ordinary iron? Could it be that this difference will make the bridge stronger when used in bridge construction?

Looking at everyone's eager eyes, Li Zhao secretly laughed at the superficial knowledge of uncivilized people. Of course, this is also the limitation of the times.

"My iron is wrought iron, while ordinary iron is pig iron. Pig iron is hard but brittle, but wrought iron is not only as hard as pig iron, but also tougher. It cannot be damaged by wind or rain."

oh!

Everyone's eyes lit up when they heard this. This was the first time they heard the term "pig iron" or "wrought iron". They knew that ordinary iron was fragile. Because of this, some capable craftsmen wanted to change its shortcomings after years of research.

, but with little success.

But this man actually did it. Wrought iron, what can solve such a problem is called wrought iron? It was the first time that everyone heard such a term, and they thought about it for a while.

It is completely impossible to say that Li Zhao's words are untrue, because everything just proved this. This iron is very practical, much better than wooden piles.

Wrought iron is hard and tough, which effectively solves the problem of brittle iron. Solving this problem will benefit all aspects!

"That's true, that's true!" Ying Zheng was excited. He held Li Zhao's hand tightly and almost shouted, "This is my good son, he is as smart as me."

But he still held back.

Being held like this, Li Zhao felt uncomfortable at all and retreated in a subtle manner, skillfully avoiding Ying Zheng's heavy hand.

"Haha! I lost my composure." Ying Zheng patted Li Zhao on the shoulder nonchalantly, and immediately said, "Please tell me how to forge wrought iron. I, the Qin Dynasty, need it very much."

These words were a bit abrupt, and Li Zhao didn't know whether to answer or conceal them. It wasn't that he didn't want to say it, but that this question involved a lot of modern knowledge, and they couldn't understand it even if he said it.

No, there is one thing they can understand.

He took a breath and said, "High temperature."

"Only high temperatures can remove impurities from iron ore and obtain wrought iron."

"High temperature? That's it." Ying Zheng nodded as if he didn't understand, and then complained, "Why can't those stupid people think of it? I made a note of it."

Ying Zheng was even more happy when he received a satisfactory answer. His eyes towards Li Zhao changed again and became very ambiguous. This made Li Zhao very confused, but he didn't take it to heart.

It is completely normal for an ancient person to gain such knowledge and have such a reaction.

Fortunately, he didn't ask anymore. If he asked again, he really didn't know how to answer.

Ying Zheng didn't mean to give Li Zhao a chance to breathe. He thought of another question and couldn't wait to ask: "The stone pillars are built in the water. Will they be washed away by the water or corroded?" He pointed to the supporting pillar in the middle of the river.

.

This question is also something everyone is curious about.

Their idea is very simple. This stone pillar is made of mud, and it is very likely that it will be washed away by water flow over time.

But Li Zhao's answer made their eyes shine again.

"No, these are pillars made of cement, iron, and gravel. They are embedded deep into the ground. Not to mention the rapids, even hundreds of people cannot shake them."

"It's so powerful." Meng Yi was suddenly surprised.

Hundreds of people, he is a soldier, so he naturally knows the power of hundreds of people, how terrifying it is! It can't shake this relatively large stone pillar.

"Absolutely. The main component of this stone pillar is cement. After the cement sets, it is extremely hard and quite stable. Coupled with the toughness of iron, it is difficult to shake it."

Li Zhao was afraid that everyone would not understand, so he led everyone to the cement road, pointed at the cement road and said: "This cement road is also made of cement. Are you trying to destroy it by order of the general?"

"this"

Meng Yi was embarrassed and looked at the emperor with questioning eyes.

It should be noted that this road is called the Heavenly Road by His Majesty. He knows very well what the Heavenly Road represents in His Majesty's heart. If he destroys it, he will be blamed.

Moreover, although this road looks smooth and solid to the touch, it is undoubtedly just an ordinary stone. How can it be indestructible?

He can break it with one hammer.

Ying Zheng also wanted to see if what Li Zhao said was so magical, so he nodded to Meng Yi.

After receiving the agreement, Meng Yi no longer had any scruples. The anger of being underestimated surged into his heart, and he immediately ordered someone to find a hammer. It just so happened that there was someone among the guards who used a hammer.

Although the hammer in his hand was not a commonly used weapon, nor was it a handy thing, Meng Yi held it so calmly and powerfully. He could guarantee that the concrete road would be broken with one hammer blow.

Without any preparation, he raised a sledgehammer that counted several stones and hammered it down hard.
Chapter completed!