The Ming Dynasty court re-enthroned the Investigation Bar as the envoy of Ningyuan Xuanwei in Changhe Xiyutong, and sent Baigan soldiers from Shizhuxuanwei to help. Changban Jilie and Wanhubatu were already awarded the title, and Litang City was easily taken down by him.

Dengzhengchao Bar also announced that the taxes of the Hoshuo Special Division would be abolished and the tea-horse trade was reopened. Tribes who wanted to exchange tea bricks, cloth, iron, porcelain and other goods could all take horses and fur to the original Arrow Warehouse, which is now Kangding City for transactions.

Once the news came out, the Kang District tribes rushed to surrender, and even just waited for the leaders of each tribe to surrender in Litang City, and there was no need to lead the army to fight everywhere.

Kang District is about to calm down, and the ancient Tea-Horse Road is about to regain its former prosperity. Deng Zhengchao Bar, Gao Jitai and others are so happy that they can't close their mouths, but Zhu Qizhuo is frowning and sighing.

What's going on?

The reason is very simple, because now there is no sign of Kangding City, the wharf, and Anding City where the iron chain bridge is located.

These two cities must be built because he wanted to make Kang District his horse pasture once and for all, and this required the stability and prosperity of the tea-horse market. Otherwise, when the tea-horse market went wrong, his war horse supply would be problematic.

This is okay to maintain the prosperity of the tea-horse market, because the tea produced in Bashu alone can ensure the tea demand in Kang District and even the Uszang area. The production of cloth, iron and porcelain in the areas it controls is also quite developed, and there is no problem to meet the needs of Kang District and Uszang area. Moreover, these goods can be transported to stability by water, which is very convenient.

The question is how to maintain the stability of the tea-horse market. Since ancient times, wealth has been moving. Once the tea-horse market prospers, there will definitely be more people who have ideas. Thieves, horse bandits, and even forces like the Heshuo Special Forces will come to the tea-horse market.

If you want to eliminate the ideas of these people, the best way is to build a majestic city in Kangding and Anding to protect the goods. If you put the goods outside or in an unprotected tent like now, it is to put them in order to make an idea!

He had wanted to build this city for a long time, but it was too difficult to build a city here.

Because the people here do not have the habit of building cities, they basically live in tents, and few people can build cities. Moreover, the altitude here is too high, making bricks difficult. More importantly, the terrain here is complicated, and building cities on flat ground is not the same concept.

Kangding and Anding cities have to be built on hillsides or even on cliffs, which have very high requirements for firmness. The lime used now does not meet the requirements in terms of adhesion and waterproofness. Even if the city is built, it is very likely that if a few rains fall, the city wall will collapse on its own!

What to do?

After considering the red utensil, I decided to make cement!

Cement is a good thing, not only for building cities and fortresses, bridges, roads, houses, etc.

He had never thought about making cement before, but his demand for cement was not so urgent before. Moreover, he had never made cement, and he had never seen the process of making cement, whether in reality or on TV.

He just vaguely remembered that in a novel, the main raw materials of cement are limestone, clay, coal and iron ore. The production process is roughly grinding and burning. Just by using this vague memory to make cement, the difficulty can be imagined.

Of course, no matter how difficult it is now, he still needs to create it!

He gathered Ma Qiancheng, Gao Jitai and Deng Zhengchao Bar and others together, and after roughly arranged the defense of Kang District, he took Qi Jin, Bi Maokang, Song Yingxing and others on a boat and headed straight for Chongqing Prefecture.

There are many workshops in Chongqing Prefecture at this moment. Moreover, there are raw materials such as limestone, clay, coal and iron ore in Chongqing Prefecture. As for the location for producing cement, he still chose the Longhe Basin. After all, the dust in the production of cement is too heavy. If it is produced in the city, it will be filled with dust everywhere. The Longhe Basin is different. Just choose a valley to build, which will not affect the people at all. Moreover, raw materials and other materials can be transported here by ship.

In the end, he chose a large valley with a casting site as the cement production base.

Because there are coal and iron ore in the casting yard, and the equipment for producing cement is all big, it is very troublesome to carry it, so it is most convenient to build it directly and install it locally.

After the location was confirmed, he called Bi Maokang and Song Yingxing to the foundry to discuss.

He sorted out his thoughts and then said slowly: "Meng Hou, Chang Geng, I am going to make something. This kind of thing is a bit like lime, but it is much better than lime. You also know that even if lime is dry, its strength is not high. Moreover, it is not resistant to water. Once the water flushes, the lime will fall off. Once the thing I want to make is dry, it will be like a stone and cannot be scratched. Moreover, it is quite resistant to water, and it will be fine even if it is soaked in water."

Bi Maokang and Song Yingxing nodded with interest when they heard this. They also understood the use of this thing without explaining it.

Zhuqiu said immediately: "The main materials of this thing are limestone, clay, coal and iron ore. The roughly the production process is to first crush the limestone, mix it with clay, then burn it into clay, then grind it into powder, then add some coal and iron ore, mix it evenly, and then grind it into powder."

Bi Maokang and Song Yingxing nodded thoughtfully when they heard this. Looking at their expressions, it seemed that there was no problem at all.

This is strange. They probably haven't made cement. Why are there no problems at all?

Zhu Qizhu couldn't help but curiously said, "Have you made this thing? Why don't you mention a single question? Do you already know how to do it?"

Bi Maokang and Song Yingxing looked at each other and gave in a moment. Finally, Bi Maokang explained: "Your Majesty, what you are talking about is similar to burning ripe lime. It is just adding something and then adding two more grinding processes, right?"

Cooking lime?

I have never seen this red utensil!

He subconsciously said, "You can also burn ripe lime?"

Bi Maokang nodded without hesitation and said, "This, we can do it. Master Yu Qian has a poem. I don't know if the emperor has heard it. He has been chiseled out of the mountains with thousands of hammers and burned fires. If it is easy, he will not be afraid of breaking his bones. He will keep his innocence in the world. This is the general process of burning ripe lime."

Uh, lime chants?

Yu Qian!

The orthodox man of Yingzong stepped forward, repelled the Ola and defended the capital of the Ming Dynasty?

Unfortunately, he was killed in the end, so he was really innocent in the world.

The Jinyiwei cried when he went to search his house because there was nothing valuable at all. The most valuable thing was a python robe and a long sword, which were all given by Daizong. He was the chief minister of the cabinet. His family was poor and he had to be too innocent. The executioner who executed him committed suicide because of shame.

Alas, it’s a pity that a loyal minister!

Of course, Zhu Qizhu knows who Yu Qian is. He has also heard of Yu Qian's popular poem. He just didn't associate it with the production of cement.
Chapter completed!