In addition to mirrors, cotton cloth, private salt, and sea trade are all developments, especially sea trade, which has a lot of saltpeter and sulfur, and a lot of copper.

At present, there is no open-hearth steelmaking technology, and the steel cannon should not be considered, because the phosphorus content is too high and it is easy to break. Therefore, the cannon can only be made of cast iron and copper, cast iron is also easy to break, and bronze cannon is easy to deform, but in general, the cannon surname cast in bronze is better.

China is a place where there is a shortage of copper, and the copper coins at the end of the Ming Dynasty have been seriously insufficient, not only the lack of copper, but also many people take the copper coins to melt and cast into bronze ware, because there are profits.

Because it has been blocked by the Ming court for a long time, because the products are not abundant, and the industrial capacity is relatively low, many things are lacking, resulting in the crazy profits of the trade to the capital.

This is also the reason why the Dutch and Zheng Zhilong are competing for this piece of fat, and Zhao Yan also covets this piece of fat, but there is no ship, let alone a navy.

There is still some discussion on private salt, but this cotton cloth is relatively easy.

Zhao Yan immediately gathered craftsmen and began to build mule machines and water-powered looms. As for the Jenny machine, although the yarn spun is fine, it is easy to break. The yarn spun by the hydrospinning machine is strong, but not dense enough.

The mule machine absorbs the advantages of these two spinning machines, and when they are combined, the yarn spun is delicate and strong. That's why it's called a mule machine, which means hybridization.

The mule machine can push 300~400 spindles, and the speed is more than 100 times higher than that of the general spinning machine.

The hydraulic loom can increase the speed by 5 times.

Zhao Yan's craftsmen have established a team that specializes in creating these strange things, and they can understand Zhao Yan's drawings and the data on them, which makes Zhao Yan worry a lot.

It is estimated that it will take more than a month to build a hydro mule machine.

"If you encounter a problem that you don't understand, send someone to find me, and I'll leave it to you here." Zhao Yan said to Zhou Tieming.

"Yes, sir." Zhou Tieming hurriedly replied, and then looked at and continued to study the details of the drawings. In general, how to use water power to drive the spindle, the structure of the machine is not too complicated.

Shandong is relatively cold, and the water vapor in the air is not as high as in the south, so if you want to vigorously develop the textile industry, you have to spray some water in the air to increase the water vapor, otherwise the yarn is easy to break.

……

Zhao Yan succeeded in soothing, and there were no big restrictions on external development, and the expansion of Tundi was already necessary. Zhao Yan took out the map and circled the plain area from Huangxian to Laizhou.

This plain area can reclaim about 3 million acres of arable land, and this plain is the area that has been ravaged by Kong Youde the most.

There is no danger to defend the plain, and the main area of Kong Youde's rebellion is the area between Dengzhou City and Laizhou City, and this plain is between Dengzhou City and Laizhou City, and it has almost reached the point of ten rooms and nine emptiness.

It has a large amount of unowned land, and at the same time, the land is relatively fertile, and as long as an effective water system is established, it can become a large granary.

According to the calculation of 30 acres of land divided into 100,000 young and strong people, this area can accommodate 100,000 young people, plus women, children, and the elderly, it can accommodate 500,000 or 600,000 displaced people.

"Before the beginning of spring next year, to fully resume production in this fast area, at least 100,000 households are needed, Zhonglin, you will take someone to inspect it tomorrow, and then take someone to calculate, how much grain, seeds, cattle, farming tools, plus water conservancy, how much silver is expected to be spent." Zhao Yan said to Tang Zhengze.

100,000 households! Tang Zhengze couldn't help but be speechless, it took a long time to react, and hurriedly replied, "Yes, my lord." ”

Then Zhao Yan asked Zhao Quan: "How fast is the business house being extravagant now?" ”

"Now there are Jimin commercial banks in Shandong Prefecture and County, and there are three in Beizhili and five in Jiangnan, all of which are in the flourishing state city." Zhao Quan said that during this time, many shopkeepers and literati were recruited, and most of those literati had undergone some simple training and then led by experienced shopkeepers.

The management of the commercial bank is very important, and the most important thing is the problem of corruption. A company, like a country, also has the phenomenon of corruption and poaching the boss.

Jimin Commercial Bank does not use the current popular 'dragon gate account', but the use of double-entry bookkeeping, the advantage of double-entry bookkeeping is to be able to understand the ins and outs in detail, any link has a problem, can be quickly identified.

In addition, based on the experience of later generations, many systems for strengthening management have been determined. Of course, corruption is possible in any company, and it is impossible to eliminate it completely. However, there is strict management, and even if it is corrupt, it can only be hidden in procurement.

Zhao Yan touched his chin and thought about it, and then asked, "How much silver do we have now?" ”

"There are already 1.32 million taels, but at present, the mirrors in the hands of the major merchants in Shandong have not been fully sold, and it will take a month or two before a large amount of silver will come in." Zhao Quan predicted.

"Where's the grain?"

"180,000 stones."

After Zhao Yan learned about his belongings, he immediately said: "Recruit displaced people in Shandong, and send people to Beizhili and Henan to recruit people." In addition, before the autumn harvest, we will spread the commercial houses to the main cotton-producing and grain-producing areas in the south, and we will definitely not have enough grain, and we will be able to buy enough grain when the grain prices fall sharply during the autumn harvest. In addition, a large amount of cotton will be purchased. Zhao Yan said.

"What do we buy cotton for?" Zhao Quan asked strangely.

"I just had the artisans build a spinning machine and a loom, both water-powered! This spinning machine is faster than hundreds of people, and the loom is five times faster than the average weaver. Zhao Yan explained.

"A hundredfold! Five times over! Zhao Quan took a breath of cool air, rubbed his hands and said happily: "Wouldn't we have another source of wealth." ”

"Nature." Zhao Yan said with a smile.

Zhao Quan did not have the slightest doubt, because Zhao Yan said that the spinning machine and the loom are water-powered. When it comes to hydraulic applications, Childe is very good at it.

Zhao Quan will also wonder many times why Gongzi suddenly knew so many things. However, Zhao Yan never explained, and he never asked, and the two maintained a high tacit understanding.

Last year's Tuntian craze has faded, and this year's Tuntian plan is about to begin.

――

The fourth update.

Tickets!

That one...... 12,000 urging, the side dishes really don't have that speed! You don't have to embarrass me.

Today, from getting up to the present, I have been sitting until now, and I have even eaten so-so, and I have only come up with these......

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