When Xu Huizu was busy inspecting Dongshengwei and Suiyuan Jiancheng, Zhu Yunwen was busy with the "Patent Law" and raising commercial taxes, and now the College of Engineering and the College of Agriculture have developed a lot of things, which are nothing to use for the Ministry of Industry for free, but the problem is that the Ministry of Industry can't use so many things, and the rest such as the imitation of the "Jenny Machine" vertical spindle spinning machine, water-powered spinning machine, water-powered loom, water-powered forging machine, water-powered oil press, etc., Zhu Yunwen's goal is to popularize it, but this can't be free, otherwise the craftsmen of the College of Engineering will not have enthusiasm for work, because the reward given by Zhu Yunwen is very high, everyone can be enthusiastic, if Zhu Yunwen wants to come out, he can't afford it, and now the glass business is a little downhill, the output of the engineering college is limited, and it can only be made high-end, and this technology is estimated to be transferred, and there are too many places to use money. Therefore, Zhu Yunwen thought of the "Patent Law", the purpose of which is to let people who study new technologies have an income, just as Zhu Yunwen also spent a lot of money to let craftsmen teach core skills to apprentices, so that it can not only increase the income of the engineering school, but also encourage others to improve technology. Another is that with the stability of the country, business will become more and more prosperous, so it is necessary to raise the business tax, the previous thirty taxes were too low, and Zhu Yunwen decided to raise the ten taxes to one.

After Zhu Yuanzhang listened to the content of the "Patent Law", he felt that it was useless, and he still needed the imperial court to send someone to deal with this matter, so it was better to let the people keep it secret, the father to the son, the son to the grandson is already the most complete "Patent Law" in the world, so why bother. Zhu Yunwen didn't know how to convince his old-fashioned grandfather, and then he had an idea, so he took Lao Zhu to the Institute of Engineering, Lao Zhu was really eye-opening, although he knew that the hydraulic forging hammer could make tough and fine armor, but he didn't expect to be able to do so many things, when he knew that the new spinning machine was equivalent to 8 old spinning machines, if he knotted the water power, he could not rest day and night, he couldn't help but open his mouth wide in shock, and after understanding the production process of glass, Lao Zhu became speechless.

On the way back, Zhu Yuanzhang looked at his grandson and said, "Yunwen, how did you know these things?" ”

"Well, some of them are from books, some are the exclusive craftsmanship of craftsmen, and some are tricks. However, when combined, Yun Wei found that the effect was quite large. ”

"Yes, the glass is nothing, the imperial grandfather is very worried when he sees those multi-spindle spinning machines, water-powered spinning machines, water-powered looms, and water-powered oil presses."

Zhu Yun paused for a moment and said, "These things are very good, can produce more yarn and more cloth, isn't it?" ”

"Yunwen, let me ask you, those looms are not cheap, right?"

"Well, it's a little expensive, but it's not very expensive."

"Then do you think ordinary people can afford it?"

"I'm afraid I can't afford this. Ordinary ones are fine, but hydraulic power is simply impossible. ”

"So have you thought about what about the orphans and widows who depend on fabrics to support their families?"

Zhu Yunwen suddenly found that there was a loophole in his thinking, he felt that industrialization was the direction of development, but the old emperor was keenly aware of a problem, that is, for traditional housewives, they just made some fabrics to support their families, their production capacity was limited, if this loom spread, then they would lose their only support for their families.

Zhu Yunwen pondered for a moment and said, "Grandpa Huang, Yunwen is not thoughtful enough, let Yunwen think about it." ”

When they arrived at the Qianqing Palace, the grandfather and grandson both sat down, Zhu Yuanzhang looked at Yun Wei and said, "How is it?" Have you thought about it? ”

"Grandpa Huang, Yun Wei plans to provide these fabrics for the army first, so as not to affect the people's livelihood as much as possible, and Yun Wei plans to set up a workshop with only female workers, so that they can also support their families. In addition, tax incentives will be given to workshops that employ women workers. ”

"Taxes?"

Zhu Yunwen patted his head violently and said: "Grandpa Huang, Yunwen forgot to say, his grandson plans to raise the business tax, and Grandpa Huang also saw it, if the Ming Dynasty uses these looms, then the merchant will make a profit of at least ten times, and there is still room for improvement in this machine, and the profit will be higher in the future." Therefore, the commercial tax must be raised, and the grandson intends to adjust it to 10 taxes, and the tax on certain luxury goods will be higher. ”

Zhu Yuanzhang frowned and said, "Is this good?" Isn't it a struggle with the people for profit? ”

"Grandpa Huang, taxes are a must, otherwise how can the country raise soldiers, and if the river is governed, how can it be paid to officials? Farmers have to pay taxes, why can't merchants collect taxes? ”

"However, if the merchants are taxed, then the market will be depressed, and the people will not even be able to buy grain, oil, salt, sauce and vinegar, so what should we do?"

Zhu Yunwen smiled: "As long as there is money to be made, how can no one do business?" Moreover, Yunwen intends to implement differential tax rates, which can be lower for grain, oil, salt, sauce and vinegar, such as 20 taxes and 1, and for jewelry, 5 taxes and 1. ”

The old emperor's eyes lit up: "This is a way, I have ordered it three times, don't be extravagant and wasteful, but it has little effect, and the powerful are complaining, if this happens, it can not only satisfy their extravagance, but also increase the income of the treasury." ”

Zhu Yunwen breathed a sigh of relief, and finally persuaded the old emperor, then this matter became more than half.

In the next few days, Zhu Yunwen, with the support of Zhu Yuanzhang, negotiated with officials from various ministries, and everyone felt that the patent law had little feeling, and felt that it had little impact, but the final sentence was a bit heavy. For commercial taxes, most of the court officials talked about it, thinking that this was a competition with the people, but fortunately, there were more officials in Hongwunian, so they longed for the sage's books, but they were actually not very cold, and in addition, Zhu Yuanzhang supported things, everyone only dared to do some detours in strategy, and did not dare to oppose directly. Yuxin, the head of the household department, is happy and uncomfortable, because the number of officials in the household department will increase greatly, the number of officials can also increase a lot, and his prestige can also be improved a lot; What is uncomfortable is that I am afraid that I will be labeled as competing with the people by future generations. Therefore, there was a big discussion within the household department, and the tax rate of different commodities was set very carefully, the lowest was still thirty taxes and one, and the region was also distinguished, and the highest reached one-third, mainly for things used by nobles, such as high-end silk clothes, pearls, jade, agate, jade, and so on. When it was handed over to Zhu Yunwen, Zhu Yunwen was also startled, is this the rhythm of digging the lifeblood of the nobles? I had to bargain with Yu Xin with a wry smile, and finally reduced the overall tax burden a little, and for common daily necessities, it was to maintain the original level and slightly increase. Finally, Zhu Yuanzhang promulgated the "Patent Law" and the "Commercial Tax Law".

Although these two laws were issued by Hong Wunian, they all know that it was Zhu Yunwen's idea. Later generations for these two laws, as well as the subsequent looms, is mixed, what happened this month, later brought earth-shaking changes to the Ming Dynasty, and even caused a lot of trouble, but the people at that time did not realize it at all, and Zhu Yunwen was happily moving forward in his own steps, and he did not realize the crisis at all.