There was a long silence in the classroom.
Qin Zhan nodded slightly and smiled.
"Old Master Liu, your mental calculation speed is really fast. It's about 500 years.”
Actually, after Qin Zhan mentioned the Khitans.
Liu Bowen began to calculate silently in his heart.
In history, the inconspicuous battle at the East Kip Stone Valley had an impact on the direction of ancient history. It was no less than Wu Zetian's usurpation of the Tang Dynasty.
Because the battle at Dongxia Stone Valley marked the complete loss of the window for the ancient Han people to develop Liaodong, and also lost the only opportunity to cross the Great Wall to develop.
They could develop farming, nomadic, fishing, and hunting. At the end of the Tang Dynasty, they finally expanded, and then there was the story of the Song Dynasty.
For the next thousand years, the Han were unable to cross the Great Wall.
If the outcome of the battle at the Stone Valley of East Kip was rewritten, Liaodong would become the Northern Great Cang a thousand years ahead of schedule, and the dynasty cycle of the entire ancient history would also undergo major changes.
In the end, the only way for future generations to understand this war was to watch the "enemy robbery" on the television screen and scold Wang Xiaojie in the Chongzhou case.
In particular, there were quite a number of boxing demons who caught a Dubhe that Wu Sansi had cultivated in order to please Wu Zetian and bragged about Wu Zetian's civil and martial arts. When Wu Zetian was in power, it did play a role in internal politics.
However, in terms of war, other than killing the remaining brother-in-law and nephew of the Li family, he was slightly stronger than the one from the Yates family.
Li Er had destroyed the Eastern Turks, and Li Zhi had destroyed the Western Turks. Li Zhiqi was seriously ill, and as soon as the Empress came to court, the Eastern and Western Turks had taken over all of their former territories.
In the battle of the East Kip Stone Valley alone, the 300,000 border troops that Li Shimin and Li Zhi had saved for decades were buried. In the end, they had to bribe the Turks with a lot of money to attack the Khitans from the flank.）
Liu Bowen, who came back to his senses, looked at Qin Zhan and said,
"Mr. Qin, this old man is ashamed…"
Liu Bowen was proficient in astronomical phenomena and had participated in the revision of several dynasties in the early Ming Dynasty.
When the calendar was revised, Liu Bowen had already calculated that the temperature of the Ming Dynasty in recent years seemed to be somewhat inconsistent with the climate when the Southern and Northern Dynasties first revised the "Great Ming Calendar"(the lunar calendar was revised by Emperor Xiaowu of the Southern Song Dynasty in the sixth year of the Ming Dynasty).
However, the difference was not big, so Liu Bowen did not care.
After hearing what Qin Zhan said today.
Liu Bowen had already realized the seriousness of the matter.
The few princes who were originally carefree could not help but feel embarrassed at this moment.
They were just here for a lesson.
However, they never expected Qin Zhan to directly throw such a heavy reality onto them.
Whether it was Zhu Yuanzhang or Liu Bowen.
At this moment, they all wanted to take out enough evidence and throw it directly at Qin Zhan's face.
He told Qin Zhan that the so-called " warm period " he mentioned did not exist at all.
But whether it was Liu Bowen, Zhu Yuanzhang, or even Zhu Biao, the oldest among the philosophers, they all knew.
What Qin Zhan said was true.
The Great Ming Dynasty started from the end of Qingping and drove the Tartars to the north. The Great Ming Dynasty naturally paid more attention to these Tartars than any other dynasty.
Liu Bowen brought all kinds of famous scholars to search for countless reasons.
After the Tang Dynasty, why did the Tartar captives in the north suddenly become so powerful?
As a result, the Central Plains had no choice but to cede the sixteen prefectures of Yanyun, causing the entire Central Plains to be in turmoil.
What was wrong with a Han man being a barbarian?
Originally, Liu Bowen firmly believed that this was because the dragon vein of the Central Plains was gradually weakening, and the Central Plains no longer had the aura of an emperor.
Today, after hearing what Qin Zhan said, he suddenly remembered.
Before the Tang Dynasty, Liaodong was still a bitter and cold place. However, during the Kaiyuan Era, Liaodong's Khitan rule actually had ten thousand hectares of fertile farmland!
Why did Liaodong have fertile land during the Kaiyuan era, but not before?
Did they really think that the Tartars did not even know the most basic agricultural production?
Even if they didn't go south to learn, in less than three years, there would be people who would return after learning!
There was only one reason!
The temperature had indeed risen!
Thinking of this, Liu Bowen even found it a little ridiculous. He had lived to this age and only knew the profound meaning behind it.
On the other hand, although the young man in front of him was blind, what he saw was definitely not something that anyone in Da Ming could compare to. Could it be that there was really an immortal in the sky?
Liu Bowen's eyes were filled with envy.
Zhu Yuanzhang, on the other hand, felt a true sense of powerlessness.
Before today, Zhu Yuanzhang only knew that his father, the ruler of the people, had supreme authority in the court and could decide anything with a word.
But now, Zhu Yuanzhang suddenly felt a sense of powerlessness in the face of natural evolution.
Zhu Yuanzhang was born in a poor family and knew how angry the commoners who could not survive would be when they saw the wine and meat in the red family stink.
When the country was destroyed, what would his descendants face?
Zhu Yuanzhang could almost use his toes to know!
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