Dai Yan was not surprised that the Taoist school flourished with the rise of the Zongheng School! In the later historical work "Warring States Policy", which can best represent the thought of Zonghengjia, most of the moral and philosophical views in it are taken from Taoist thought. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

However, Dai Yan has no intention of saying goodbye to Taoism for the time being. Not to mention that this knowledge is like a dragon, difficult and obscure, and most of the people who can master this knowledge are people with great wisdom. The most important thing is that the people of this school are deeply involved with the high-level leaders of Qi and Chu. Dai Yan, as the son of the Song Kingdom, is still a proton, where can he dare to pick the think tanks of the two big countries?

And the direct consequence of Qi's victory over Qin was the rapid reconciliation of Qi and Qin!

After Zhang Yi became the prime minister of Qin, he quickly adjusted the relationship between Qin and Qi. Not only did he send people to Qin to apologize, but he was even willing to make a symbolic tribute to Qi in order to achieve friendship between the two countries.

And after seeing the huge pressure brought by the Qin State's only 20,000 lone troops, the Qi State really saw what the army of tigers and wolves was! In addition, considering that Qin and Qi were thousands of miles apart, and there was no direct conflict of interest between the two sides, the king of Qi agreed to reconcile with Qin.

This war was the first direct conflict between Qin and Qi, and the beginning of Wei's complete reduction to a second-rate state. After this battle, the world began the era of Qin, Qi, and Chu competing for hegemony in the world.

After Zhang Yi took charge of the Qin State, his means were indeed quite extraordinary, and in order to be able to attack Korea and Wei with more confidence, the first thing he did was to try his best to promote the marriage of Qin and Chu.

The king of Qin married the sister of the king of Chu, and the princess of Chu became the queen of Qin as soon as she married into the state of Qin. And with the princess of Chu to Qin State, there is also Dai Yan's former fiancée, Mi Yue, who was later repented of by the King of Chu.

After having a solid Qin-Chu alliance, Qin, under the leadership of Zhang Yi, quickly began to adjust its foreign policy, changed the past measures of westward crusade against Rong Di, and began to attack Han Wei with all its strength eastward.

The transformation of Qin and Chu did not have much impact on Qi, and Qi was still in his most prosperous period. Under the contention of hundreds of schools, ideas collide, and culture is still prosperous!

"Yanzi, what is the difference between the 'air' you speak of and the 'qi' that each family speaks of?" , In the Jixia School Palace, Zou Yan, the master of the Yin and Yang family, asked Dai Yan for advice with the posture of a junior.

The new concepts of astronomy and geography proposed by Dai Yan greatly touched Zou Yan.

Because the conclusions put forward by Dai Yan are obviously more in line with reality, and the system composed of the theory of yin and yang and the five elements proposed by Zou Yan himself is obviously not as perfect as the system proposed by Dai Yan.

Therefore, Zou Yan ran to Dai Yan's side to ask for advice whenever he was free.

"Air is the colorless and odorless thing that covers the surface of the earth. In fact, like stone, it is a real substance. Air has weight, quantity, and the composition in it is as diverse as that of stone.

The qi referred to by the various families refers more to the origin of matter, which is very different from air. Dai Yan said slowly.

"So how can the existence of air be proven?" Zou Yan asked again. Since learning more and more from Dai Yan, he has also begun to learn to ask questions in a scientific way.

For all the hypotheses that are proposed, it can be regarded as a proposition. For a proposition to be convincing, it must be able to prove it completely! And this is the basic method of studying science.

Dai Yan didn't speak, he walked directly to a pool and blew on the pool, causing ripples on the surface of the water. Dai Yan said to Zou Yan: "There are such clear facts, you should know it." I don't have direct contact with the water, but I can influence it from a distance. This is a clear proof that air exists. ”

Zou Yan asked rhetorically: "If according to Yanzi, there is a large amount of air on the surface of the earth, then doesn't it mean that we are carrying heavy objects like stones all the time?" So why am I okay? ”

When Dai Yan heard this question, a flash of inspiration popped up in his mind with Zou Yan's words, and he found a way to quickly promote science!

But now he had to answer Zou Yan's question first, so he said to Zou Yan: "Zou Zi can see that there is pressure in the air, which is indeed very good. I call the ratio of pressure to the area of force as pressure, and pressure is used to describe the effect of force. I think in Zou Zi's opinion, we live on the surface of the earth, and we should be under the strong pressure of the air every day, and we have no impact at all, shouldn't there be such an effect? ”

"Yanzi Mingjian, that's what I mean." Zou Yan replied.

For such a question, Dai Yan, who has undergone a lot of mathematical, physical and chemical knowledge training in later generations, is of course no stranger, he replied: "We are not affected by atmospheric pressure, it is not that atmospheric pressure does not exist, but we also have air inside our bodies, and the air pressure in the body is roughly equal to the air pressure outside the body, so Zou Zi can't feel the existence of air pressure."

In fact, air pressure is an extremely powerful force, far beyond the power of mortals like us to resist. ”

Zou Yan began to stop at Dai Yan's explanation, and nodded in agreement, but when he heard what Dai Yan said later, there was a powerful power in the air, he was a little skeptical: "How can Yanzi prove this?" ”

Dai Yan replied to Zou Yan and said: "Zou Zi, please give me a month, and I will personally demonstrate the powerful power of air in front of the world." Let the world truly know the true value of our science in the world! ”

After replying to Zou Yan's questions, Dai Yan personally wrote a paper on air and pressure. In this article, he systematically expounds the definition of pressure, and describes the pressure of an object, the pressure of a liquid, and the atmospheric pressure.

However, such a paper has not caused the slightest ripple in the current Jixia Academy. This is because although the influence of science as a subject is limited, it is not attractive to most of the bachelors, and it is far from becoming a prominent science.

Another more important reason is that at this time, most of the travelers began to fall into the "Zhang Yi worship syndrome", everyone admired the power of the Zongheng family, and they were more interested in the Taoists who came from the same source as the Zongheng family! Most of the wanderers began to turn to Taoism, carefully studying the power and intrigues in Taoist thought. So that he can learn the real skills as soon as possible and be appreciated by the princes.

During this period, Dai Yan personally instructed the disciples of the Mo family to create two important things.

The first thing was two hemispheres nearly a foot in diameter, one of which had a special valve, and on either side of the hemisphere was hooked by extremely thick metal chains.

Another important thing is the vacuum pump. Vacuum pumps are not something that can be made simply in the future, and this is especially true in this day and age. So Dai Yan changed his mind and began to use bamboo and bamboo tubes to make something similar to a syringe in later generations. He has personally experimented with this thing, although it can't pump air, but it can pump water perfectly!

Fortunately, what Dai Yan has to do, although it needs to create a vacuum. However, he didn't need a vacuum that was too precise, he just wanted to play an expected experiment, but he didn't want to make a really perfect vacuum pump.

When he had finished making both objects, he went to visit the prince of Qi himself, and the more novel things he had, the more interesting he was.

When he saw the prince, Dai Yan said directly to the prince: "I want to perform a trick for the prince to watch, I wonder if the prince is interested?" ”

"I wonder what kind of trick Childe is going to perform?" The prince asked curiously.

Dai Yan smiled mysteriously, and then replied: "The name of this trick is 'Horse Weakness', I will show the prince that the horse that can pull a thousand pounds has become powerless, and even the small ball horse that ordinary people can pull away can't pull away!" ”

Such a trick obviously had an appetite for the prince, and he immediately agreed to Dai Yan's performance. As for Dai Yan's mention of the practice of performing this trick in public, the prince only agreed after a little thought. In his opinion, the more people there are, the more lively the scene! The trick performed in public in front of the common people must be interesting!