Li Shimin looked at Yunyao's residence and found that there was indeed a burst of medicinal fragrance, steaming hot, and the alchemy furnace, which was taller than Yunyao, was still on fire. It seemed that his daughter was really refining alchemy. Empress Changsun, who was holding Yunyao, also asked in surprise: "You little clever, why have you learned to refine alchemy?"

"I found a few old prescriptions in the book, and try it." Yunyao opened his big black and white eyes widened and said in a pretended innocent way. As long as she activates the art of pretending to be pitiful, the emperor and the queen will not doubt it.

Li Shimin did not doubt whether the old Fangzi really existed. He was even more curious about why Yunyao wanted to make money, so he asked: "I heard from Baoping that you refine elixirs to sell money? You are only three years old and in the palace, why do you want to make money? Did your elder brother instigate you?" He was worthy of being his own father, and immediately doubted whether his eldest son had brought his sister to ruin.

"It has nothing to do with the emperor's brother, it's my thoughts on history. From ancient times to the present, since history, there have been strong countries, and many dynasties have been strong for a while, but they cannot escape decline in the end. I wonder why this happened? Finally, I found a problem, that is, these dynasties did not find the direction of development when they were rich, and they eventually declined, and they inevitably went to destruction. As powerful as the Qin and Han Dynasties, their development directions were all external expansion. Although they were strong for a while, they still failed to change their decline in the end, so I wonder if there are any other directions of development."

Li Shimin was as stupid as a chicken. This was what a three-year-old boy realized when he was studying? He recalled that when he was a teenager, he was only moved and regretful for the people in history. How could he summarize such a truth?

The previous dynasties were destroyed without a direction of development? Isn’t that the way it is? But according to my daughter’s meaning, external expansion is not the best direction, so the best direction is the so-called industrial upgrading. So he asked: “The development direction you are talking about is industrial upgrading? What does this mean?”

It is really difficult to explain. After all, this is a summary of later generations. Nothing has happened now, and it is difficult to understand the truth. Therefore, a good thinker must be a good story teller. The reason why various schools of thought can be spread is because they tell the truth through stories, which makes it easy for people to understand a truth that they have never been exposed to through association.

Yun Yao thought to himself how to explain industrial upgrading? In fact, simply put it simply to eliminate inefficiency and upgrade it to high efficiency. Li Shimin fought south and north, so use war to explain it.

"In order to use war as an analogy, it is upgraded from chariots to cavalry, from infantry to archers. When fighting, war is still a war, but the way of war has been changed, which can be called upgrades. The human race has tamed horses for a long time, so why are easy-to-use cavalry after the chariots? The human race has invented bows and arrows very early, but why are large-scale archers appearing very late?" "Not only that, there is also a way to select talents, the cultivation of scholars in the Spring and Autumn Period, the Han Dynasty's recommendation, the ninth rank of the Wei and Jin Dynasties, and the imperial examinations of the Wei and Jin Dynasties. Even today, the importance of talents has been known since ancient times, but why has the imperial examinations been invented until now?"

Li Shimin and Empress Changsun were both in deep thought, and obviously they had not thought about the problem from such a novel perspective. The history of the Central Plains revolves around historical figures, so it is difficult to clarify the timeline. Those who study will learn how historical figures deal with problems, and they will roughly know the sequence of history.

I heard Yunyao ask why horses were tamed long ago, but easy-to-use cavalry appeared after chariots; bows also appeared long ago, why easy-to-use archers became large so late; I have even known the importance of talent selection since ancient times, and why the imperial examinations only appeared in the Sui Dynasty.

Is this the secret of industrial upgrading?

"Yun'er, then why do you think this is?" Queen Changsun asked for her husband.

"The first chariot appeared because there was no saddle and riding was very dangerous. The archers had not reached a scale, but because the production of bows and arrows was too difficult. The reason why the imperial examinations only appeared now is because papermaking technology, knowledge spreads faster and scholars more, so the selection method also changed. From chariots to saddles, the production of bows and arrows has changed from few to many, and the selection of talents has gone from few to many. I call it industrial upgrading. But definitely not only that, but also the increase in grain output, the development of agricultural tools, and the evolution of vehicles and ships.

The expansion of roads, changes in building materials, etc., have greatly improved our lives. However, we did not take the initiative to pursue upgrading before, but we just waited for everyone to discover a more convenient way in life, and then promoted it naturally, or learned their experience from abroad. But I think we can take the initiative to upgrade the industry, but upgrading requires money, so I want to make money." Yunyao tried her best to explain. If they don’t understand, she had no choice but to do it first and then let them understand.

Fortunately, Li Shimin and Empress Changsun were not stupid people, and Yun Yao’s example was quite obvious, which was the change of tools, production, and scope.

Tools are more advanced, production is stronger, and the scope is wider. Li Shimin not only understood it, but also summarized that industrial upgrading is to change tools, production methods, and coverage.

This idea is still very clear, but was it really a three-year-old doll come up with? It was indeed Tianshu. When his daughter was born, she was full of rays and red clouds, Li Shimin knew that she must be a daughter of a Qilin. It seems that it is true now. It really makes me feel ashamed to be able to put forward such a concept. As an emperor, I have never considered the development direction of the Tang Dynasty, but my daughter considered it for my father. How smart is this?

Unfortunately, it's a daughter, if it's a son...

"Then what are you going to upgrade first after you make money?" Empress Changsun was very curious, not knowing what this quirky little girl wanted to upgrade.

The Emperor of the Tang Dynasty could not help but look at Yunyao, wanting to know her target.

"It depends on how much money you can make. If you have less, upgrade your learning tools. If you have more, find a way to upgrade your vehicles, ships, looms, etc. In short, you can only upgrade with money, and the right way to use money to upgrade."

Li Shimin thought to himself that he was saying that spending money to fight was not the right way? But it was impossible to fight. There were Turks in the north, Tuyuhun in the west, and Goguryeo in the east. However, there was no war on the south side because the War of Unification ended.

There are enemies in the other three directions, especially the two enemies in the west and north, which may affect the Silk Road. In fact, the civilization in the west is entirely maintained by the Silk Road. If they cannot control the Silk Road, they will suffer because that place is not suitable for farming at all, and they can only be used as second-hand dealers.

But why should the Tang Dynasty's commodities make the difference? So in order to open up the Silk Road, the Tang Dynasty would inevitably attack the Turks in the north and Tuyuhun in the west. Of course, there was also a Tubo country, but as long as Tuyuhun was defeated, Tubo would not have any threat.

Now the Tang Dynasty is still preparing to attack at any time. Unfortunately, even if it defeats them, the Tang Dynasty does not have much energy to develop these places. Because its productivity is insufficient, the land that is not suitable for farming cannot be developed at all, and it can only maintain the original living conditions in the local area. Therefore, once the Tang Dynasty weakens, these places will definitely rebel again.
Chapter completed!