Chapter 11 Temperature in Ancient China

He Xi came over this time and brought very few things. Blackboard and chalk included.

These two things are not difficult things to do. He Xi casually asked the people of He Fu to make it.

However, the blackboard is too different from the blackboard of later generations, but it is a piece of wood with black paint on one side. As for the chalk, it's just a lime mold. Naturally, there are problems of one kind or another. For example, the blackboard is slippery, and the writing is not visible. As for the chalk, it is very easy to break. A pinch will crush.

It's just, it's just improvised.

After all, what I talked about in the morning was all conceptual things, and I couldn't blackboard, although He Xi was a little unaccustomed, but it was okay. This is no longer the case. He simply brought it. Let the carpenter make a shelf and put it behind him.

Maybe it's because I'm adapting to the rhythm of the morning lectures. He Xi doesn't need radish and cabbage to suggest the method. I was able to give lectures freely.

Today, however, the situation is different.

Perhaps it was He Xi's lecture in the morning that was really wonderful and attracted many students. But they didn't dare to come in outside the Yilun Hall, and there were no seats for them inside. Seeing this, He Xi asked them to stand in the back, or squat in the aisle, but in the end it was not enough.

It should be known that there are more than 2,000 students in Guozijian.

He Xi can only let people open all the windows. Open all the doors. As a result, there was a dense crowd of people outside Yilun Hall. This is of course because He Xi spoke wonderfully. But there are also many people who come to see the excitement.

And Song Ne's face became more and more serious when he saw today's situation. He is usually very serious and does not smile, and today I can't tell whether he is uncomfortable or angry. Only Song Ne himself knew how dissatisfied and disgusted he was in his heart.

But the law does not hold the people accountable. Today's situation is also the studious inmates. He doesn't have any seizures. Instead of their own passivity. I can only endure it.

After He Xi calmed down the order, he coughed lightly, although there were hundreds of people densely packed below, but they were silent in an instant.

He Xi took out a flower first. Asked, "What kind of flower is this?" ”

Someone immediately raised their hand, it was none other than Lian Zining.

Lian Zining has a bit of the rhythm of He Xi's fans at the moment. Cherish every moment you learn from He Xi. After all, knowledge is precious in this day and age. Even many Confucians who take classes in Guozijian will only tell the truth when they teach their private disciples.

And He Xi's lecture is full of dry goods. It has a guiding role from a high position. Although some details are missing, as long as you put in some hard work is enough to make up for it, whether ancient or modern, Chinese students who really work hard have never been afraid of hard work.

He Xi nodded. Lian Zining stood up and said, "This plum blossom." ”

He Xi gestured and said, "So are there plum blossoms in the north?" Are there any students from the north to answer? ”

A student from the north raised his hand and said, "No." ”

He Xi nodded, asked him to sit down, and said, "Su Dongpo also said no." 'Blossoming sends the after-cold, the knots and the new fire. Guanzhong is fortunate to have no plum, and Ru Qiang is full of peace. 'But has there been no Mei in Guanzhong?' There are clouds in the Book of Poetry: What is the end of the south? There is a plum. The gentleman stops, and the fox in brocade clothes. Yan is like Wu Dan, and his king is also good! What is the end of the south? There is discipline and hall. The gentleman is the end, and the black clothes are embroidered. Peiyu will not forget, the life test will not be forgotten! In the Book of Poetry, this plum is not the same plum as our current plum blossom. ”

"And Zhan Bi Qiao, green bamboo. There are bandit gentlemen, such as cutting and learning, saying that the bamboo of Qishui, the Warring States Policy, etc., also said that the bamboo forest here makes arrows, which is inexhaustible. But in the Han Dynasty, the river was decided, and Emperor Wu of the Han Dynasty cut it down, and the bamboo of Qi Water was gone. Nowadays, in Zhangde and other places, there are no large bamboo forests. Where is the place where there are large bamboo forests? It is south of the Yangtze River. ”

"This phenomenon makes me curious. That is, at different times in ancient times, the temperature was different. So what era has a temperature and how? What impact will the temperature have on this era? So I did some research. It can be regarded as a gain, and I dare to invite you to taste it today. ”

"But to do this knowledge, you must first have a standard. I set the ice-water mixture to be zero, and the temperature at which the water boils is one hundred, which is divided into equal parts, and I get a person's body temperature of thirty-seven degrees, ten degrees in spring, around thirty degrees in summer, and so on. None of this is too strict. In this regard, I also hope that better craftsmen can provide me with instruments that can directly measure temperature, so that I can conduct more accurate research. Of course, this is off topic. ”

"In the end, we came up with a table like this."

Immediately, He Xi beckoned, and Wang Qianli, who was standing outside the door, took out a paper tube. He Xi opened it, took out a large piece of paper, and asked people to nail it to the blackboard. It's nothing else. It is from antiquity to the Ming Dynasty that the table of temperature changes.

This is certainly not the result of He Xi's research.

Rather, it is the research result of Zhu Kezhen.

On his phone, there is a book explaining this. His biggest takeaway was this chart. He just took a screenshot. In ancient times to the Warring States, there was only a period of rapid decline and then rapid rise in the middle, in He Xi's view, it probably corresponds to the time before and after King Ping's eastward migration, and then the temperature slowly dropped, and there was a period of rapid decline in the Three Kingdoms period, after which, the temperature rose slowly. By the Sui and Tang dynasties, it became parallel, and then it declined rapidly in the late Northern Song Dynasty. In the Southern Song Dynasty, there was a rebound, and then there was a decline in the late Yuan and early Ming Dynasty, that is, the current era.

Actually, this picture came out, and there was no need for He Xi to explain it. With so many students here, they have their own ideas.

After all, none of the Guozi prisoners in front of him are children. Although the study of history is not deep. But the beginning and end of the most basic dynasties, whether they are ruling or chaotic, are still known.

Even Song Ne was so shocked that he couldn't speak at the moment. He couldn't even evaluate this picture, and Song Ne never interpreted history from this perspective. Suddenly I felt that I was extremely shallow. But then he came back to his senses. He secretly said in his heart: "This method has merit, and it is the most suitable to explain the will of heaven." If the court is peaceful, God will bless it, and if the court is chaotic, God will hate it. ”

There are countless ways to interpret it.

Every period when the temperature drops is a chaotic time, which can be interpreted as the impact of the temperature drop on food production. The lack of food affected the stability of the imperial court, and thus entered the troubled times. But it can also be interpreted according to Song Ne's interpretation of heavenly and human induction. That is, the court has no way, and the will of heaven abandons it, so the temperature drops, and then all kinds of chaos, and the court perishes.

However, even if Song Ne had this thought, he began to listen attentively at this moment, like a most devout student, who had memorized every point He Xi had said, and was ready to use it to refute He Xi in the future, and then inherit his doctrine and make the changes he wanted.

In fact, such situations abound in history. Only the victors can be passed on. As for the victorious school of thought, it is also quite normal that there are some other schools of thought. Anyway, they have the highest say.

However, He Xi did not directly explain this diagram, but first explained the table and mathematics. said: "A lot of learning can be carried out if it is done in subtleties. Because many subtle expressions cannot be carried out, in fact, in many previous literati notes, it is also a matter of improving the climate, but it is only a paw and a half, why don't they continue to study. It's because there are no math tools. Mathematics is the most accurate. Only mathematics can most accurately describe phenomena. ”

"So, I suggest that no matter what you study, you should still become an official in the future. In terms of mathematics, it must not be too bad. After all, words can deceive you, words can deceive you, but math cannot. ”

"Going back to this chart, first of all, I want to explain that because I don't have enough data at hand, and the concept of temperature, I created it, and there is no tool to measure temperature. These are all estimates. So there is an error, after all, there are so many ups and downs on it. But in reality, the difference between the highest and lowest places is only one or two degrees. ”

"I hope you'll be able to fix this picture in the future."

"We're going to talk about how to determine the temperature of each era."

He Xi immediately began to explain, measuring the temperature of the flowering of each flower, the temperature of the growth of each plant, looking for plants from various places in historical documents, as well as the growth rings of big trees, etc., a series of aspects.