Chu Tang: Tell Li Er at the beginning that I am a time traveler

Chapter 72 This Is Why I Value Li Chong So Much
When Li Er said that he was free, of course Li Chong had to argue.

Otherwise, the reputation will be ruined, which is not good.

"Actually, I'm not idle at all. There are many things I have to think about every day."

"Oh? For example?"

"For example, when the Tang Dynasty, there will not be enough food in this pass."

Changsun Wuji felt that Li Chong was talking nonsense, so he interjected, "Is this thing conceivable?"

"Of course I can think of it. I predict that in about 50 years, the food in Guanzhong of Datang will not be able to supply the population in Guanzhong. At that time, we must rely on water transportation or move the capital to alleviate the crisis caused by this food."

Li Chong's words.

Always so suddenly.

After everyone reacted, Changsun Wuji also said, "Why don't you say 100 years later?"

Li Chong said quickly: "Duke Qi is so anxious, I can take care of it."

"Then what do you say?"

Changsun Wuji was furious.

Li Zhong said: "When the Sui Dynasty was prosperous, why did Emperor Sui Yang build Luoyang Palace and build the Eastern Capital?"

"Naturally, it was because of his desire for pleasure."

Changsun Wuji took it for granted.

"wrong!"

Li Chongdao: "That's because Chang'an's food may not be enough at that time, and Luoyang is located in the center of the world, and has always occupied a favorable location. All the things in the states and counties can be transported to Luoyang by land and water, and the transportation is very convenient. To give an easy-to-understand example, there is a plate of pastries on the table, and the pastries are only so big, and the population, when the country is stable, tends to increase continuously, or even skyrocket. The rulers of all dynasties have only realized that, The benefits of a large population, because a large population means more taxes, and more taxes means more money and food that can be collected for enjoyment, but I have never seen that after the population increases, will the cakes be insufficient in the future? point."

"How many stones of grain can one mu of land produce at most? For better land, two or three stones, for poorer land, there is more than one stone, but this is the limit of the grain that can be grown in the field. At the beginning, the population is small, and it may be divided among five people. Five pastries, five people can each get one, but what if ten people share five pastries later? Then only half a pastry is left for each person, what if there are fifteen or twenty people?"

"Now that the Tang Dynasty is still at the beginning of the founding of the country, of course there will be no such problems, but within a few decades, the situation of insufficient food will gradually appear due to the rapid growth of the population. By then, the situation will be better. Maybe they can barely eat the chaff, the people just look hungry, but if there is a drought or when the chestnut rice is about to ripen and it rains, and the grain production suddenly decreases, then people will eat each other and the dead will sleep with each other."

"Therefore, even though everyone says that Emperor Sui Yang was a tyrant, I still have to say that running the Eastern Capital and opening the canal is a major event that can benefit the country for thousands of years. His strategic vision is not wrong, it's just his method. Wrong, he should not be eager for quick success. The price of eager for quick success is the subjugation of the country."

Changsun Wuji: "It's nonsense!"

Wei Zheng said, "I think it makes sense."

Wei Zheng looked at the pastries that did not exist on the table, and then asked, "Then how do you think this matter should be resolved?"

Li Zhong: "It's simple! Use mathematics to solve it. Population growth is actually predictable. As long as people from the Ministry of Civil Affairs carefully calculate the new population increase in Guanzhong every year, and compare it with the previous year, you will find that , although the number of this increase is not exactly the same, but it can always be regarded as unchanged within a small range, that is, how much it increases this year, it can be seen how much it will increase next year. In mathematics, there is a The simplest analysis method, called linear regression, can fit this situation. After predicting how many years later, how many people will the Tang Dynasty have? In the year, there will be a crisis in Guanzhong.”

"It can even be calculated from a theoretical point of view that each household in the Guanzhong area should not own less than a certain number of acres of land, otherwise, once these people face a catastrophe, something will happen. Once you master this method, You can see the future, and you can arrange your national policies step by step according to the plan. The granary should store grain, and if there is not enough food, find a way to transport it elsewhere instead of waiting until people starve to death. Only then did I know the remedy. If some people run out of land, they can continue to reclaim as long as they can, and if they can’t, then let them leave Guanzhong and go to other places. Give them preferential policies. For example, they didn’t have to pay taxes a few years ago, but The country should also ensure that his whole family will not starve to death in the past few years."

"Like today's Tang Dynasty, the population is mainly in the Guanzhong area, and the population of Hebei and Henan provinces is the majority, while the population of Jiangnan province is still very small. Even eating is a problem staying here, so naturally we must find a way to support ourselves first."

Li Er listened, and said directly to Wei Zheng and Changsun Wuji: "This is why I value Li Chong so much. Remember to hand over the memorial tomorrow."

Li Chong: "..."

No!

How can this be done in a day or two!
This requires the Ministry of Civil Affairs to provide population and household registration and land data, and it also requires people to collect and calculate.

At least one or two months.

If you think about the current population in Guanzhong, there are not 100 million, but there must be hundreds of thousands. Even if you can see all the data of a household with one account, at least more than [-] copies must be collected, which is two days a day. Can it be done?
"It will take at least a month or two to make it."

Li Chongdao.

"Then I will give you a month."

"..."

"Two months!"

Li Chongdao.

Then Li Er stared at him.

If you don't speak, if you don't speak, that is the default.

Changsun Wuji felt that he had miscalculated.Yes, it seems that from the very beginning until just now, he didn't quite understand why Li Chong was so favored by His Majesty. Until today, he seemed to have glimpsed something.

Wei Zheng then brought up a new topic.

Asked: "Speaking of which, I have always been curious, what does the word 'science' mean in this Academy of Sciences? Li Chong, can you explain?"

Facing Wei Zheng who is like a curious baby.

Speaking of...

He seems to have received a lot of help from Wei Zheng, at least when Changsun Wuji always targets him, Wei Zheng always seems to be able to speak up for him.

of course!

Li Chong also knew very well that Wei Zheng was only on the side of justice, and he didn't want to be friends with him.

Since he is so curious.

Li Chong explained: "The so-called science is actually to understand the principles of the operation of the world, and then apply these principles."

"Oh? How do you understand? Can you give an example, just like the pastry just now."

"Of course, for example..."

Then, Li Chong went to find the Pupu boat that he had played with before.

(End of this chapter)