Chapter 12 Big History
A considerable part of these details have nothing to do with historiography, but are the content of phenology. In ancient times, it was mostly exegesis or natural history. But when He Xi talks about it now, the supervisors below will naturally listen to him as a historical content.
After all, there is no detailed subject classification these days. Naturally, He Xi could say whatever he wanted.
By the time He Xi finished speaking, the sun was setting in the west.
He Xi also secretly breathed a sigh of relief. Three days of preparation for lessons, covering things that I am not too familiar with. It is not easy for He Xi to make things transparent. Fortunately, after more than ten years of studying, He Xi's learning ability is still acceptable.
After some sudden study, the secret was finally revealed in front of these people.
It’s over now. He can relax for a while.
At this moment, the chart on the blackboard behind He Xi had already been put away. There are patterns like this on the blackboard, and the most eye-catching one is the countless round matryoshka dolls stacked together. This is what He Xi painted about the tree rings to explain the impact of climate on trees, and the fact that the colder the weather, the slower the trees grow and the smaller the gaps between the tree rings.
He Xi said: "Okay. Now it's time for questions."
It is no longer as deserted as it was in the morning. Almost instantly, countless arms stretched out from all directions. Even outside the windows and doors, there were countless people extending their arms.
He Xi was impressed by Lian Zining who asked questions in the morning. Let Lian Zining still answer.
Lian Zining asked the question that almost everyone wanted to ask, and said: "Sir, do you think there is a connection between temperature and the changes in the historical court?"
He Xi did not answer directly, but said: "The maximum population in the Han Dynasty was more than 60 million, the maximum population in the Tang Dynasty was about 50 million, and the maximum population in the Song Dynasty was about 140 million. Whenever After the war, bones were exposed in the wild, and there were no people inhabited for thousands of miles. In the end, the population became densely populated, and then there was a great chaos. Land is limited. Population growth is unlimited. Children beget children, and grandchildren beget grandchildren. The output of the land is limited, but the population is unlimited, right? When the land is not enough to support the population, will the world be in chaos?"
This question stunned everyone.
Many people broke out in a cold sweat. Because they think what He Xi said makes too much sense,
He Xi used chalk to put a big X on the blackboard. Said: "To study history, we must have a broad historical perspective and a perspective of time and space. Looking at thousands of years, looking in all directions, and grasping the overall situation from time and space. Only when you can see the world can you see a corner, and only when you can see the thousands of years can you see a moment. This is First, we need to understand that history is a very complex system, and many things are not caused by a single cause. The problems behind every historical event are very complex, and some people even think of two historical trends in one thought, but The thoughts of this person are beyond the knowledge of our descendants."
"Going back to the previous question, is there any relationship between temperature changes and historical changes?"
"Perhaps. I can only answer you this way, because we who study history must not talk nonsense without having a piece of evidence to say anything. We must not take it for granted. I have focused most of my energy on this topic before. .As for the relationship between the two, you can answer it yourself."
"However, even if there is a relationship, it is a very complex linkage, and it will not be caused by climate change alone."
He Xi is not a history student. Now that I am talking about it, I really think that I am a history major. In fact, there are many discrepancies in what he said.
For example, today's discussion of big history is different from the concept of big history in later generations. It is equivalent to the comprehensiveness of later history. It's just that He Xi doesn't know it. He just defined it himself.
However, here, He Xi is the originator of new history, and whatever he wants to say is whatever he wants. He has the power to define historiography. Naturally, you can say whatever you want. This is also what makes He Xi happy.
"Sir, what do you do with a thermometer?"
"Sir, do you think the difference in climate between the rich in the south and the poor in the north has something to do with it?"
"gentlemen----"
Countless questions were thrown at He Xi, but He Xi only answered four or five. No more answers. Because He Xi found that if he kept answering, he might not be able to answer tomorrow.
I could only end my questions and prepare to leave.
The Imperial College students did not dare to block He Xi's way and could only watch He Xi go out.
"Sir, can you let the students take a look at your picture?" Lian Zining still had the courage to ask.
He Xi didn't care and asked Wang Qianli to give the picture to Lian Zining. Lian Zining took it with both hands and said, "Within three days, the student will return to Zhao intact."
He Xi nodded and said, "Okay."
In fact, he didn't care too much about this picture. But he couldn't overdo it. After all, books were very expensive and scarce these days. This picture of his is also very valuable.
He Xi left.
Lian Zining was immediately surrounded by countless supervisors. Countless people came forward to see the picture. Lian Zining was afraid that the picture would be harmed, so he hugged the picture and said, "Wait a minute. I'll trace it down and let everyone see it. I'll trace it down and let everyone see it."
It's just that many prison students repeatedly told Lian Zining that they didn't care at all, as if they didn't hear him.
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An hour later, in the Qianqing Palace, everything He Xi said in class today was recorded one by one and placed in front of Zhu Yuanzhang.
Zhu Yuanzhang read the thick stack of speech notes more than once. He watched it over and over again. Let out a final sigh. He once again confirmed his previous judgment. The knowledge in the future will be profound and profound. Even if he gets a lot of documents or even a magical computer, he will not be able to fully master it. Understand and understand again.
On the one hand, Zhu Yuanzhang is getting old after all, and his learning ability has declined. He can no longer study while fighting as he did when he was young.
On the other hand, the knowledge of the future is self-contained and contains a lot of content, which cannot be learned completely by one person. It is estimated that for a long time to come, only He Xi will be able to grasp more of the essence.
Although He Xi did not say it directly, Zhu Yuanzhang also saw from the speech that climate change and population expansion must be important reasons for the country's collapse.
How could Zhu Yuanzhang not be interested in such important content? And He Xi had no intention of hiding Zhu Yuanzhang, but it had been half a year since He Xi arrived at this era. Zhu Yuanzhang still didn't know much about it. Why?
It’s just that Zhu Yuanzhang had too many things to learn. Before it was the history of the Ming and Qing Dynasties and scientific common sense, but now it is Mao Zedong Thought and Marxism. It is quite difficult for an old man who has been reading the books of sages to master these things. Progress is slow.
In this way, He Xi's status in Zhu Yuanzhang's heart improved again.
Zhu Yuanzhang thought for a while and said to Xu Zheng: "How about making a copy of these contents and sending it to the prince, so that the prince can write down his thoughts?"
Xu Zheng said: "I understand."
Zhu Yuanzhang said: "My name is He Xi-----," Zhu Yuanzhang looked at the sky and saw that it was already very late, so he changed his words and said: "Let He Xi come to my place after tomorrow morning."
Xu Zheng said: "Yes."
Zhu Yuanzhang waved his hand and asked Xu Zheng to do it.
Just when Xu Zheng was about to go out, Zhu Yuanzhang suddenly remembered something and said: "Are there thousand-year-old trees around Nanjing?"
Xu Zheng immediately turned around, saluted and said, "I don't know, but I think it should be there."
Zhu Yuanzhang said: "Chop one and bring the stump to me."
The suspicious Zhu Yuanzhang never trusted people easily, although he knew that what He Xi said was not his own. It must be something proven by later generations. It is very authoritative, or consensus. But Zhu Yuanzhang was still suspicious. You need to cut down a thousand-year-old tree to see what the growth rings look like.
It's a pity that this ancient tree has stretched for thousands of years and escaped countless disasters, but it fell under Zhu Yuanzhang's thought.
Xu Zheng didn't know why Zhu Yuanzhang did this? But he never discounted Zhu Yuanzhang's orders. He immediately said: "I will order someone to find him right now." Then he half-bowed and stayed still, wanting to see if Zhu Yuanzhang had any other orders?
Zhu Yuanzhang read the memorial and said, "Go ahead. There is nothing for you to do here."
Only then did Xu Zheng retreat.
