After receiving Li Chong's suggestion, Li Chengqian went to prepare for the army to conquer the Six Edicts.

Then let the people of the Six Edicts refine copper for him.

And Li Chong's side......

Over the years, he has also made a lot of money, so he paved bridges, built roads, and opened ditches.

Feel......

It's time to do it.

Afterwards......

Li Chong began to plan to build 100 bridges in various parts of the Tang Dynasty.

Meantime......

This cement or something, we have to start researching it.

It can only be said that there are still certain restrictions on the construction of railways now, for example, there are some big rivers, such as the Yellow River and the Yangtze River, and it is impossible for you to build railways on them.

That's just what to do.

Fix the railroad there, break it in two, and when you have got all the people and goods across the river by boat, you can continue on the road with another steam locomotive on the other side of the river.

In this way, it is naturally very cumbersome.

It's okay at the moment, after all, the railway has not been built on a large scale in Datang, and it doesn't need to pass through a big river, but sooner or later, Datang will have to face this problem.

Li Zhong remembered that the firing of cement seemed to be limestone, then sand, and then some iron-making slag, iron powder, and so on.

If there is a volcano, so much the better!

Because the invention of cement is not related to volcanic ash.

Present......

Li Zhong wrote a letter to the five little ones.

Let's see if we can use a boat to bring the volcanic ash directly from the Wa Kingdom.

Of course!

Now Li Zhong is taking a little bit as an attempt.

Meanwhile......

We should also learn from this Western experience.

After all, if you really want to talk about the use of cement, it still depends on the West.

And then......

Li Chong published an article in the Science Newspaper, which specifically explained how to build bridges on the Yellow River and the Yangtze River.

The idea is actually quite simple.

It is to sink a large iron bucket into the river and the river, and then evacuate the water inside, and then hang people down, and dig the stratum to a certain extent, not the kind of soft mud that will settle.

Then the steel bar is lowered, and a material that can be quickly solidified, and after solidification, the hardness is comparable to that of stone, and it is not easily corroded by river water.

When the piers are laid like this, the laying of the bridge above will not be a problem.

All I can say is......

In the era of the Tang Dynasty, which is generally facing the spacious river and still using pontoon bridges, for example, the big iron ox on the side of the Yellow River in the Chinese textbook, which is sixty or seventy years later, his idea is really a little too advanced.

And......

If it is according to Li Chong's theory, then no matter how wide the river is, it can also build a strong and reliable bridge.

It is said that on the side of the Liaodong Academy of Sciences, the craftsmen were immediately excited after reading this article.

can only say such a good idea, why didn't the dean say it early in the morning.

Probably because this material can solidify quickly, and it can be as hard as a stone, and even corrosion-resistant, so it is a bit difficult to find.

At the end of the article, Li Chong apparently has not found this material.

But......

But the craftsmen thought that they had found it, after all, since the Northern and Southern Dynasties, they had not had glutinous rice mortar for a long time?

It's just that......

Glutinous rice mortar is generally used to build city walls, and sometimes, some bridges are also used, but most of them are still concentrated in places that are not soaked in water for a long time...... To be honest, no one has ever practiced this.

But at least, the dean has given them a good idea.

Other than that......

Actually, there is another problem.

That is how much the bucket has to be so that it can withstand the river and not be swept away by the river.

Because in normal people's thinking, the river is so turbulent, you may just let it go down and be swept away by the river.

But......

Since this problem should still be solvable, these people did not think too much about it.

In fact, for the entire eastern Liaoning region, the construction of this bridge is still very important and necessary.

Because Liaodong does not say that the river network is dense, but it is really necessary to say that there are really a lot of rivers.

If you can make all the bridges, don't say too much good.

Thereupon......

The Academy of Sciences began to apply to Li Zhi to try to do such an experiment.

Fortunately, it's just a model to make.

Otherwise......

I don't know how much this glutinous rice will be wasted.

It's no different from pouring glutinous rice directly into the river.

Until Li Chong got volcanic ash, limestone, etc.

Then I also made an attempt in Luoyang.

Only then did I gradually seem to find a trace of feeling.

But......

The formulation of cement is also a problem.

How much volcanic ash and how much sand or something?

Li Chong can only try little by little.

He did it himself, and then the craftsmen on Datang's side were also doing it.

When the time comes......

When the results are made, write his name.

And then......

He was the first inventor!

Actually, that's right!

After all......

It was he who led them to do that, not them themselves.

It's a very long-term thing.

After making it, you have to test the effect and soak it in water to see if it can hold up.

Basically, this Yuanheng six years is almost like this.

In the sixth year of Yuan Heng, there was also one more incident, that is, there was a rebellion in Qiongzhou of the Tang Dynasty, that is, Hainan Island.

Li reassessed and touched that this was still related to the low quality of local officials.

Even though the Tang Dynasty is now peaceful in the world, it can be seen that the persecution of the people still happens from time to time.

Of course!

Don't say it's ancient, even if you change it to the next generation, that's the same.

In response to these various things, Li Chong, who is in Luoyang, can only be said to be powerless.

After all, the sky in Qiongzhou is high and the water is far away, and sometimes even Li Chengqian's words may not be useful.

But......

Li Chengqian could have replaced the officials who governed the area.

Other than that......

It is also necessary to let the Guangzhou Assassin send troops to quell the rebellion.

In the entire six years of Yuanheng, there was almost no major event.

In addition to the court, there seem to be fewer people talking, and speaking of which, Yu Zhining is also gone in this year.

But it's actually okay, because after Li Chengqian came to power, in fact, these positions are not so important.

Even, even if there is no left and right servant shooting all year round, it is not a big problem.

All I can say is......

This has probably been the case in all dynasties.

When the new monarch succeeds to the throne, the former prime ministers and others will definitely be decentralized, so that the imperial power can be centralized.

And Yu Zhining's death also marks that the status and power of the prime minister have been swept into the garbage heap of history.

Next, as long as the title has 'Tongzhongshu Menxia Pingzhangshi', it can be regarded as the prime minister.

I don't know if it's progress, or what.

Anyway......

It's that Datang is really changing a little bit.