Wei Zheng's admiration for Li Jiancheng, even if he felt that this command was confusing, he subconsciously thought that it should have a deep meaning.

He didn't hide his doubts, and asked directly, "What does this rope say?!" ”

Li Jiancheng said with a smile: "I just saw a method to test the speed of water flow in the book, and I want to try it." ”

That's right!!!

Li Jiancheng wanted to measure the flow rate of the river in this section of the river.

You must know that the reason why there is the idiom of the mainstay is precisely because the pillar mountain here in Sanmenxia does not move in the face of the roaring turbulence!

But this pillar mountain, since the beginning of recorded history, has only collapsed once, in 611.

Let Yang Guang, the unlucky emperor, meet.

Shandong and Henan flooded more than 30 counties. In winter, in October, the pillar of the Yellow River collapsed, blocking the river and causing the river to flow backwards for dozens of miles.

Regarding the few records in this almanac, Li Jiancheng didn't know how many times he vomited in his heart.

It is true that he is an archaeology major, but he is not a major in the Yellow River Defense Department, and he did not specifically investigate in his previous life.

Now, when I want to understand the situation and take precautions in advance, I find that I am blind.

In the face of natural disasters, people are so fragile and insignificant, this is no longer a problem that Li Jiancheng can easily solve if he has a high IQ.

In the future life, when natural disasters are encountered, there are 10,000 difficulties, and 80,000 support, Li Jiancheng feels that it is difficult for him to play alone!

What's more, there are many inconveniences in his identity, if he is a Taoist priest, it can be said that he is watching ......the sky at night or something, and predicts that the low mountains of the Yellow River will collapse, giving everyone a hint.

Let people save themselves!

But he is not a Taoist priest, and there is no way to perfectly hide why he knows about it......

At the moment, he could only take a step back, calculate the flow of water, and guess which counties would be affected.

There are still four years left to do as much precaution as possible.

These people will be Li Tang's people in the future, and they will do their best to keep them.

Although, Li Jiancheng also thought about it, if he did this, would there not be so many artificial anti-......, and Yang Guang's country would be stable.

Li Jiancheng said that Yang Guangtai can do it, even if there is no natural disaster, he is still dying, unless his personality can be changed.

If it is really changed, Li Jiancheng thinks it is not bad, and he no longer has to prevent Li Er from fighting with himself for the imperial guard.

Compared with Yang Guang, Li Jiancheng felt that Li Er was more difficult to deal with.

Wei Zheng couldn't guess what Li Jiancheng was thinking, but he didn't express doubts about Li Jiancheng's behavior, and nodded secretly in his heart, thinking that Li Jiancheng didn't forget to test what he had learned even when he came out to look at the landscape, no wonder he was so outstanding.

The group boiled some broth, then soaked the pot helmet in it, and after filling their stomachs, they headed for Sanmenxia.

After walking for half an hour, I arrived at the edge of the Yellow River.

Li Jiancheng looked at the tumbling river in front of him, the mainstay mountain standing in the river, and did not have the Sanmenxia Hydropower Station built for flood control that he saw in his previous life, and he was in a trance for a while.

Li Xi saw that Li Jiancheng seemed to have a sense of immortality riding the wind, and his heart couldn't help but tremble, and he subconsciously called: "Lang Jun." ”

When Li Jiancheng turned to look at Li Xi, he had already put away his emotions and raised his eyebrows to look at Li Xi: "What's the matter?!" ”

"How do you measure the velocity of that water?" Li Xi can't say that seeing your situation just now makes people tremble, so let's call it.

Li Jiancheng nodded, summoned the three guards, and explained the method.

After Li Xi and the other four left, Wei Zheng felt the Yellow River and said:

"Now that the weather is getting warmer and warmer, you can grow citrus in Guanzhong."

The climate is also cyclical, constantly alternating between warming and cooling.

Li Jiancheng nodded: "I heard my grandmother say that when she was young, she could often see frost and snow, she said that at that time, she felt that it was too cold after the snow, and she hated it to death, but now when she sees the snow, she can be happy for several days." ”

Thinking of the scene where Xiao Li Er played crazy when it snowed before, I didn't feel embarrassed.

"But it's a good thing, I've heard that if the Yellow River freezes, there will be ice overflowing, and the high water level is very dangerous." Wei Zheng has been a Taoist priest all these years, and he knows a lot of things when he travels around the world.

This is also where Wei Zheng is proud, reading thousands of books, it is better to travel thousands of miles, so that he feels that his vision is higher than that of people who close the door and die reading.

I thought that at Li Jiancheng's age, his experience must be limited, but he didn't expect ...... to be so shocked that he had to be convinced, and in the end he could only think that this was the foundation of the family.

Li Jiancheng would not kindly tell Wei Zheng that I am a person who has lived for two lifetimes, and I had the Internet in my previous life, even if I don't go out, I know what is going on in the world, but I just followed Wei Zheng's words:

"Yes, it's the Mother River, but it's always angry. In this way, I have to thank sages like Wang Zhongtong. ”

Li Jiancheng said Wang Zhongtong, referring to Wang Jing, Zhongtong is his character, a famous water conservancy engineering expert in the Eastern Han Dynasty.

After Wang Jingzhi built the embankment, the Yellow River has not undergone major diversion for more than 800 years, leaving the saying that Wang Jingzhi River has been free from trouble for thousands of years.

The two chatted one sentence after another, waiting for Li Xi and the guards to finish their measurements, Li Jiancheng listened to the reply, with joy in his eyes.

One of the guards seems to have a talent for water conservancy.

Because Li Jiancheng planned to leave one person behind before doing surveying and mapping for a period of time, and when he came back from Luotian, he would take him back to martial arts.

Now there are candidates, and there is still some talent.

After finishing the serious business, Li Jiancheng proposed to go back.

Although the temperature was below freezing, the surrounding area was empty, and the wind blew on the face, making the skin ache.

The clammy air ran down the neckline and cuffs, and for some reason, it went straight into the cracks of the bones.

In addition, Li Jiancheng was still thinking about Yuan Tiangang in his heart and wanted to meet this legendary figure.

The time spent standing by the river was not short, and everyone walked back on their legs.

A few people in a group, at the end of the Shen period, returned to the Taoist temple.

When he saw the Pure Dao Chief, Li Jiancheng asked with a smile:

"Pure Daoist, I don't know if the person you are waiting for is here."

The Qingjing Daoist guessed that it should be Wei Zheng who said something, which made Li Jiancheng interested in Yuan Tiangang, he stroked his beard, sighed and said:

"I'm afraid Master Li is going to be disappointed, I didn't wait for anyone, I only waited for a handwritten letter."

Li Jiancheng didn't hide the disappointment on his face, and muttered: "The dragon can't see the head but the tail." ”

Wei Zheng stepped forward and asked, "What is written in Daoist Yuan's letter?!" "If Li Jiancheng is not good at asking, he can say it directly.

The Pure Daoist took out a letter from his bosom: "Read it for yourself." ”

Wei Zheng Zhanxin watched, and after only one breath, the expression on his face became strange.