After listening to his eldest son's story, Li Shimin felt that his worldview had collapsed, he hadn't done it, these things can still be done like this.

And from Li Chengqian's narration, he grasped one point, that is, no matter what, the court that made the rules would not suffer, and at this moment he was even more convinced of Yuan Tiangang's prophecy.

But he also found some problems, that is, it involves the formulation of a lot of laws, even the formulation of commercial taxes, and some problems that he can't mention.

"Gao Ming, your idea is good, but it's a little difficult to operate! In this way, you write down this idea of yours, and take it for your father to discuss with your uncle and them," Li Shimin said to Li Chengqian after thinking for a long time.

"Okay, I'll get it in a few days, but Dad, I'll tell you, this patent department, don't look at it as doing some business registration work, but if you do it well, it will have a lot of benefits, after all, you can take out the money to buy patents, that one is not a rich person, and if there are many patents, then the world's businessmen will basically come, then you say, these businessmen are coming, then they want to register, then we know all their information, and in the future, if the empire has any policies, or disaster relief or something, If you want to buy goods, let the patent department send an official document and let them do it, wouldn't it be much faster, after all, they can be said to be living on the patent office.

And there is also the biggest benefit, that is, those businessmen who have bought the exclusive right to use the patent for life, although those people do not have much rights, they have money, and in the future, for their own interests, no matter what turmoil happens in the empire, they will lend a helping hand and help the empire tide over the difficulties, because they want the empire to protect their interests" Li Chengqian said with a smile to his father.

Hearing Li Chengqian say this, Li Shimin's eyes suddenly lit up, and he said to Li Chengqian with an excited look, "Good boy, it turns out that this is your ultimate goal, don't say it, if this is the case, then what are those families, even if there is a turmoil like the Sui Dynasty in the Tang Dynasty in the future, it will not cause the court to run out of money, and the end of the trouble."

"Dad, you can't be too optimistic, what will happen in the future, who knows, in case there is a loser in the future, who is bent on reaping benefits from the patent department, wantonly changing and destroying the rules we have formulated now, for example, he saw that someone bought a very profitable patent from the patent department, and he used the right to get the patent in his hands, and destroyed the family, then the patent department will be abolished" Li Chengqian said with some worry.

"These things, there will definitely be, who can guarantee that their descendants are good, we can only do our own things well, as for the descendants of future generations, to what extent it can depend on their creation, but effective checks and balances are still possible" Li Shimin taught Li Chengqian, and a smile appeared on his face after speaking.

"Now that the problem of craftsmen and businessmen has been discussed, then tell me what is going on with the establishment of the official school," Li Shimin stared at Li Chengqian and asked.

But before Li Chengqian could answer, his mother walked out, "Second brother, what are you doing, why don't you let Gao Ming go, what if the tie is broken after tying it for so long" The eldest grandson Wujian said while helping Li Chengqian untie the rope.

"Yes, I'm still tied there, Dad, you're too unkind, it's better for my mother, what this world said is right, it's really a mother's child like a treasure" When his mother untied the rope for him, Li Chengqian remembered that he was still tied to the stool, he was speechless for a while, and secretly scolded himself for being stupid, is there a tendency to be masochistic, this has been helped for so long, he is not a little unhappy, but he said so much to his father.

"Guanyin, this kid is as expensive as you said, and his skin is real! Okay, go make us a pot of tea, the stinky boy continued, hurry up" Li Shimin faced his wife's complaints, and said disapprovingly, which immediately attracted the eyes of the eldest grandson Wujian, but the eldest grandson Wujian still went to make tea for their father and son according to Li Shimin's instructions.

"Dad, in fact, the reason why this family can be passed down to this day is entirely because they have a large collection of books, and they have cultivated and helped many people with their collections, so if we want to eliminate the family, we can only start from this aspect.

My plan is to use the money I have earned in business over the years, as well as the money I have been earning in the future, to open free official schools in all counties and even townships of Datang in the name of the royal family, so that children between the ages of 6 and 9 can enter school for free and study for three years, teach them basic Chinese characters and simple arithmetic, so that they can understand some truths, and then ............"

"Wait, Gao Ming, this is really going to be opened, have you ever thought about how much you need to invest? And you're still free" Li Shimin was really taken aback when he heard Li Chengqian's plan, and couldn't help but interrupt Li Chengqian's words.

"Dad, of course I know that I need to invest a lot, but I didn't say it, it will be implemented directly in all counties, I will first choose a place as a pilot, where there will not only be a primary school for free education for Mengtong, but also a middle school with excellent grades after three years of schooling, such a middle school I plan to be a county for three years, and then set up a high school in the county for three years, the knowledge imparted by the middle school and the high school is more profound, and in parallel with the imperial examination, that is, those with excellent grades can enter the middle school to study, Those who are admitted to the examination can enter higher education, and those who are admitted to the examination can enter the university, and the university is divided into ordinary universities and military universities.

This ordinary university, just like this academy, is generally prepared for participating in the Jinshi scientific examination, as for the military university, it is a place dedicated to cultivating military talents, and I plan to open one in this military university, not like ordinary universities, every Daozhou will have one.

And this ordinary middle school, high school and university, that is all to collect money, I haven't thought about how much to charge, but the military university is different, it will not collect money, but there will be a case of money every month, because the people who come out of the military university will be low-level officers in various guards, at least a guide from the ninth grade, they will be an indispensable middle force in my Tang Army. Li Chengqian told his father all the ideas he imagined about the official school.

"Gao Ming, this is an official school, this is understandable by my father, after all, as you said, if you give the world a place to learn, the advantages of the family will slowly disappear, and with the disappearance of the advantages, the family will also disappear, but have you ever thought about it, do we have so many books and gentlemen to teach them? This is the first point, and this second point is the military university that it is, is that really necessary? After listening to Li Chengqian's account, Li Shimin asked very puzzled.