this novel is healthy

Chapter 637 Climate Change 【Addition】

[Sudden addition, and there will still be three more later, surprise or surprise, is it unexpected,]

"It's too real, it's too outrageous. This original king must have been a great talent only after 4000 years. It's incredible that he compiled these astronomical and meteorological data so accurately and properly!" Wei Zhonghua in the reference room While continuing to calculate, he kept saying with emotion.

He has been in this reference room for nearly half a month. During this half month, it has given all the astronomical and meteorological contents in the "General History of the Three Kingdoms" and "General History of the Western Han Dynasty" in more detail. I picked it up, and then made a weather model to verify it. I found that the whole model was extremely accurate and amazing, as if there really was a world called Huaxia, and the East and West Han Dynasty for more than 400 years.

Unlike Xiuyan, who directly uses a super quantum computer to perform calculations, Wei Zhonghua does not even have a decent computer, and can only rely on an old computer with a history of more than 60 years in the reference room for assistance. A pen was used to undertake the main calculation work, and only then did the construction of the meteorological model be completed.

"By the way, according to this calculation model, around the 120th year of the first calendar of the novel, the climate of the entire Chinese world will change and enter the second cold period. Then there will be many abnormalities in the climate during this time period, Let me take a look, it seems to be the period of Emperor Xuan of the Han Dynasty in the general history of the Western Han Dynasty!" Wei Zhonghua muttered, according to his research findings, from the time of climate records in the general history of the Western Han Dynasty, there have been two warm periods and two warm periods in the entire history of China. sub-cold period.

Among them, the first warm period was about 1-2000 BC in the Yuanshi calendar, that is, the Xia and Shang dynasties. During this period, the climate in the entire Huaxia region was very warm, because the data stated that there were a large number of people near the capital of the Shang Dynasty at that time. The broad-leaved forest is a tree that can only grow in warm climates.

Then there will be the first cold period. Between 1 BC and 900 BC, although it only lasted 800 years, the climate was extremely cold during these 100 years. In this book, there is even a story about the entire Yangtze River being completely frozen. recorded.

Afterwards, from 800 BC to 120 AD, there was the second warm period. During this period, the temperature in the entire Huaxia region began to rise again, so that the climate in Xiqi became pleasant, and the entire Northern Shaanxi Plain became the world's warmest period. The most fertile land in China.

After the end of the second warm period, the second cold period naturally ushered in, and this cold period lasted for nearly 2 years, and the history of the Han Dynasty that Wei Zhonghua has learned so far is also in this period. There was a period of cold, and that was the end of all climate history.

But now that the model has been made, Wei Zhonghua naturally made predictions along the model, and finally came to the conclusion that the second cold period will last for about 2 years, and it will probably end around 600 years ago.

After that, China will enter the third warm period, which will last for about 3 years, until it ends around 400, and then enter the third cold period.

The third cold period will last for 3 years, that is, around 200-1100 at the beginning of the Yuan Dynasty, followed by the fourth warm period.

The calculation of the fourth warm period is not so accurate. Wei Zhonghua estimates that it will be about 4~200 years, and it will end in 300 at the latest.

The fourth cold period will last for about 500 years until the end of the cold period around 2100, and China will enter a warm period again.

After Wei Zhonghua came up with such eight cycles of climate changes, he didn't think about more things, but from the perspective of future generations, these eight cycles of changes are actually closely related to China's historical civilization.

For example, the first warm period, 1-2000 BC, was the time when Xia and Shang flourished. The population of China increased greatly during these two dynasties, and the Shang Dynasty was also established during this period.

And when the first cold period began, because this cold period was only about 1 years, there was no dynasty change, but the national strength of the Shang Dynasty was seriously lost, and with the second warm period coming again, Xiqi, which was the first to recover the temperature With the successful logging of merchants, the Zhou Dynasty was established.

And this warm period lasted for more than 900 years. During this period, China entered the era of the Spring and Autumn and Warring States, and the Spring and Autumn and Warring States also became a period of germination of various ideas and systems in Chinese history, as well as a period of population explosion.

But at the same time that the population is exploding, there will still be a large population that can be freed up for various philosophical thinking, and there will be a large number of dead princes fighting.As a result of such nonsense, the population is still rising, which means that during this period, agriculture is very developed, and the minimum agricultural output can meet the needs of the current population, and there is still a large surplus. With so many strong laborers, they can still feed so many idle gentry.

According to historical records, it was also during this period that the Chinese civilization began to expand rapidly. From the original Central Plains area, various vassal states were continuously entrusted, and finally reached Qin State in the west, Yue State in the south, Qi State in the east, and Qi State in the north. The Kingdom of Yan basically built the core territory of China, which is the result of the expansion of the second warm period.

The second cold period after that was actually the period of the Eastern Han Dynasty and the Three Kingdoms and the Five Husbands.During this period, the agricultural conditions in the entire north became worse and worse due to climate change, so the food production in the north became less and less, forcing many people to move south, because the south was warmer and could grow a lot of crops. food.

The most obvious evidence is that during the Three Kingdoms period, Wu was able to rely on the south to achieve a tripartite confrontation, which was unimaginable before the Eastern Han Dynasty. After all, the south could never compete with the north in terms of population or food.

During the period of the Five Husbands, the south ushered in a period of real great development, more and more people were forced to move south, and the harsh living conditions in the north also made the fighting more and more, so in the end it was the powerful army in the north Conquered the south, and eventually the Sui Dynasty ruled the world.

With the unification of the Sui Dynasty, the third warm period gift package will arrive.It's a pity that the fate of the Sui Dynasty was not good. This only lasted for a few decades and the big gift package was handed over to the Tang Dynasty. The ruling period of the Tang Dynasty almost covered the entire third warm period, and built a The huge rule and territory of the Tang Dynasty.

Until the beginning of the third cold period, the land of the Tang Dynasty could not support more farmers, and the food began to be seriously insufficient, so a new dynasty cycle began.

The third cold period lasted for a long time, and basically the entire Song Dynasty was in this period, but the Song Dynasty was more fortunate that he lost the coldest area in Yanyun Sixteen States, and the northern area he had in his hands was climate. Fairly humid Central Plains.

In this way, the Song Dynasty did not need to bear the unlucky population of Yanyun Sixteen States who would only consume more food, and the highly developed south could also continuously send more food to the north, thus helping the Song Dynasty maintain its rule.

This also led to the extremely prosperous port transportation in Kaifeng Prefecture. The millions of people in Kaifeng Prefecture all depend on water transportation from the south.This also made the defense of Kaifeng Mansion very difficult. There are a large number of waterways that can directly attack the city, which indirectly led to the demise of the Northern Song Dynasty.

At the same time, this is also the reason why the Song Dynasty lost more than half of its territory. After changing from the Northern Song Dynasty to the Southern Song Dynasty, the economy was more prosperous than before, because the Song Dynasty left its burden to the Kingdom of Jin.

However, the unlucky Liao and Jin countries had more burdens on their bodies, but lost the bravery of their ancestors, so they could only continue to exploit the farmers in their own land, which eventually led to their own doom.

(End of this chapter)