Zhu Chao accompanied me to watch short videos

Tang Dynasty.

Li Shimin looked worried at this moment.

Although from the Sima family's manipulation of power to the turmoil and conflicts of the Wei, Jin, Southern and Northern Dynasties, the emperor's sacred halo as the "chosen son of heaven" has long faded.

However, the concepts of "the king's power is granted by God" and "the king's power is granted by heaven" are still deeply rooted in people's hearts, and many people still believe in them firmly.

But at this moment, Zhang Zongchang's behavior was tantamount to digging hard at the base of the high tower of "harmony between heaven and man", shaking the foundation of people's hearts.

This is undoubtedly extremely disadvantageous to the rule of his Li family. If the people do not even respect the gods and the heavens, how can we expect them to respect the emperor?

Just when Li Shimin's face was full of worry, Changsun Wuji spoke.

"Your Majesty, this matter is not unsolvable. We can completely attribute this matter to the fact that the Dragon King is compassionate and appears to send rain, and is unwilling to bother with ordinary people..."

At this point, Changsun Wuji seemed a little speechless.

"Setting the pace?" Li Shimin reminded.

"Yes! It's about setting the pace. The term 'later generations' is quite appropriate."

After Wei Zheng pondered for a moment, he also agreed: "Your Majesty, I think this plan is feasible."

Seeing Wei Zheng also expressed his support, Li Shimin couldn't help but laugh at himself. He knew very well that Wei Zheng and others had their own considerations.

This method has both advantages and disadvantages. No, for ministers like Wei Zheng, it has both advantages and disadvantages, but for him, it has both advantages and disadvantages.

According to Zhangsun Wuji's approach, it can indeed help stabilize the regime.

However, this also indirectly elevated the status of theocracy. Advocating theocracy would inevitably infringe upon imperial power and at the same time make imperial power more restricted.

If there is any major disaster in the future, and if praying for blessings or threatening others fails, does that mean they are not worthy of being emperors?

Tianmu, it really gave him a difficult problem!

……

Ming Dynasty, Yongle period.

Zhu Gaochi also had a worried look on his face. With his wisdom, it was not difficult for him to see that this video might sow disaster for his Ming Dynasty.

Zhu Di, however, didn't care. Seeing the ugly face of his fat son, he couldn't help but teasing him, "What are you afraid of? I have a knife in my hand. If anyone doesn't accept it, just stand up and fight with me!"

"Of course you are not afraid, but what about our descendants in the future?" Zhu Gaochi complained in his heart.

"What a mess! I think this boy named Zhang is pretty good. He writes wonderful poems and his temper suits my taste. If the Dragon King doesn't make it rain, we should kill him hard!" Zhu Gaoxu shouted unhappily when he saw the two men playing guessing games.

"Idiot! All you do as soon as you open your eyes is work! (x4)" Everyone present cursed in their hearts.

"Father, we in the Ming Dynasty also have this cannon. When it stops raining, I will go and bombard it!" Thinking of being able to defeat God, Zhu Gaoxu's tone suddenly became excited.

This made Zhu Di stunned, and then a gleam of light flashed in his eyes.

Yes, the cannon in the sky does not look much more advanced than the “General Cannon” of his Ming Dynasty. If future generations can use this method to pray for rain, then his Ming Dynasty may be able to do the same!

At this moment, the screen on the sky slid downwards and the title changed to what they had just seen.

[The principle of artificial rainfall, popular science, artificial rainfall anti-aircraft gun]

After seeing the title, whether they were scholars in deep thought or officials whispering to each other, they all held their breath, sat upright, and stared at the sky like primary school students attending an open class.

Some quick-witted ones even began to sketch out pictures in their minds. Could it be that this so-called artificial rainfall was caused by future generations flying airplanes with a large amount of clean water to the clouds and then sprinkling it into the sky?

How many planes and how much clean water are needed to create a timely rain?

Before they could study it more carefully, the video started playing.

on the screen.

Two men in work clothes stood next to a dark green "anti-aircraft gun", looking at the weather and seemingly calculating something.

After the calculation results came out, the two people divided the work, one sat on the operating table, and the other loaded ammunition for the "anti-aircraft gun" in the back.

After all the shells were loaded, the man on the operating table adjusted the angle and direction of the lower barrel.

Everything is ready.

"Boom!"

"Boom!"

"Boom!"

Amidst the continuous roars, six or seven shells streaked across the sky like meteors and soared into the clouds.

Soon, the originally sparse clouds began to gather, quickly becoming thick and dense, as if a huge black curtain covered the sky, presenting a momentum of dark clouds pressing down on the city and threatening to destroy it.

After about a few seconds, a drizzle began to fall from the sky. After a deafening thunder, the drizzle suddenly became heavy, like a downpour, watering the thirsty earth.

——"I'll give you five dollars and let me play with you twice, but don't force me to kneel down and beg you! (crying to death)"

——"This must have been edited, otherwise it wouldn't have rained so soon."

——"The so-called modern way of praying for rain is to use cannons to reason with God."

——"Do you know why we set off cannons into the sky? Because he is kind! (There should be emoticons here)"

——"It's so funny. In prosperous times, it rains. In troubled times, it provides air defense. It is said that the Meteorological Bureau has more than 7000 anti-aircraft guns and more than 8000 rocket launchers, which can be called the first civilian artillery regiment in China. (covering mouth and laughing)"

——"Dragon King: Thank you for the big rocket, I will show you a heavy rain from the sky!"

Ancient.

The expressions of the ancient people at this moment are hard to describe.

What is the difference between this and Zhang Zongchang in the previous video?

Don't they just use cannons to attack directly?

It seems that God/Dragon King is a real softie, daring to bully us who have no guns!

At this moment, those who already had doubts about the existence of gods became even more shaken.

Even Jiajing, an old Taoist who was obsessed with cultivating immortals, began to doubt whether the immortals he once believed in really existed.

If it really exists, it's probably a bully who only fears the strong and bullies the weak. Why is he trying to become an immortal? Can't he just bombard it with cannons? Maybe the harder he bombards it, the faster he will ascend.

At this time, the sky screen continued to play.

[As we all know, artificial rainfall is a powerful tool to ensure a good harvest in drought years. So what is its principle? Why can it rain just by firing a few shells into the sky? ]

【First of all, to understand the principle of artificial rainfall, we must first understand how rain is formed. 】

[Simply put, the water on the surface of the earth is heated by the sun for a long time, and evaporates into water vapor, which is then blown to high altitudes by air currents.]

[Because the temperature in the high altitude is lower, water vapor will condense into tiny water droplets or ice crystals when it encounters cold. Then a large number of water droplets or ice crystals gather together, continue to expand and grow, and form clouds visible to the naked eye.]

[When the water droplets or ice crystals in the cloud continue to grow and become heavy enough, they will fall from the cloud. If the temperature below the cloud is high, the ice crystals will melt into water droplets and form rain. If it is not high, it will snow or hail. ]

Eastern Han Dynasty.

"Earth?" There was a tremor in Zhang Heng's voice, and a hint of unbelievable surprise.

"Is it really a sphere?" An unprecedented excitement surged in his heart.

At this moment, long-standing doubts and explorations were answered.

The saying "the sky is round and the earth is square", an ancient concept that once bound the minds of countless people, has been proven to be wrong.

And he, Zhang Heng, proposed the "Hun Tian Theory" many years ago, a theory that was once regarded as a fantasy by the world, but now seems to be so close to the truth!

Years of persistence and conjecture were confirmed at this moment, and Zhang Heng felt unprecedented satisfaction and pride.

Let’s see who dares to laugh at him and say he is talking nonsense again!

……

Yuan Dynasty.

Guo Shoujing murmured, "Have the later generations' research on astronomy, geography, and even meteorology reached such a profound level?"

His heart was filled with shock and admiration. Seeing Ye Zhiqiu, what was shown on the screen was not only an exquisite explanation of Yu's life, but also a proof of his profound insight into the laws of nature.

"Then according to the theory of water circulation revealed by later generations, wouldn't the amount of water in the world never decrease?"

"If that's the case, then future generations should not only be able to call for rain, but also be able to drive it away."

As he spoke, Guo Shoujing continued to look at Tianmu, waiting for Tianmu's explanation.

[As I just said, the white clouds that can be seen everywhere in the sky are formed by the water droplets floating in the air. The reason why they don't fall down is because these water droplets are too small, so if we want it to rain, we just need to make the water droplets in the clouds bigger. ]

[The purpose of firing shells into the sky is to make the water droplets bigger. The shells contain catalysts such as dry ice, urea, silver iodide, and sodium chloride. They are hexagonal like the crystal lattice of water and can act as condensation nuclei.]

[When water droplets encounter these substances, they will condense on them, causing the water droplets to gradually grow larger. When they grow large enough, they can overcome the rising air currents and air resistance, and eventually fall down to become the rain we see.]

"Urine...urea?"

Luo Li and Li Man looked at each other, and a strange feeling arose in their hearts.

They had gone out to have fun on rainy days.

Well, I have also done more abstract things like opening my mouth to catch raindrops.

They used to think that rootless water shouldn’t be that dirty, but when the name urea appeared, they suddenly felt that the rain water was a little unclean.

"Urea...it should have nothing to do with urine. It should just be a chemical name." Li Man said to comfort herself.

"That's right! It must be like this!" Luo Li nodded like a chick pecking at rice.

……

tomorrow.

Zhu Gaoxu's face showed an expression of sudden enlightenment: "So that's how it is. It turns out that rain has nothing to do with the Dragon King. It's just that the water droplets in the sky keep getting bigger and bigger, and finally they can't be contained anymore, so they fall down, just like I want to poop..."

Zhu Gaochi interrupted him hastily: "Second brother, second brother, that's enough, we all understand, there is no need to use metaphors anymore."

Then, Zhu Gaochi turned to look at Zhu Di who was eager to try: "Father, we have nothing of what Tianmu said except that urine. I need to ask the Ministry of Industry to speed up research and development. If we can master the technology of artificial rainfall, it will be a blessing for the Ming Dynasty and the people of the Ming Dynasty."

Zhu Di looked at him coldly: "What do you mean, Prince, are you trying to tell me that I should either spend money to fight in Mobei or keep the money to develop this?"

Zhu Di's eyes were as cold as a knife, and his voice gradually lowered until it became bone-chilling: "Prince, are you forcing an old man like me to make a choice?"

Upon hearing this, Zhu Gaochi knelt down and kowtowed: "I dare not!"

"Oh, don't dare? Isn't that what you mean? You've been trying to persuade me in various ways. It's really hard for you."

"I tell you, I'm going to fight in Mobei! I'm going to conquer Japan! I also need the technology to make artificial rain! Otherwise, how can you let me go down to see my ancestors?" Zhu Di spoke in a sonorous and powerful voice, and every word was as hard as iron!

Zhu Gaoxu was watching his elder brother being scolded and suddenly felt that there was nothing good about being the crown prince. It would be better for him to be a local emperor in Japan, where the emperor was far away.