This is a good opportunity for the Great Song Dynasty monarchs to do popular science, it is better to take the opportunity to arouse their interest in exploring nature, than to let them burrow into the stacks of books all day long to learn those old sesame rotten grains.

In the face of Wang Yushi's accusation, Li Buqi just smiled, and then asked him: "You said that water will not fly to the sky." So is rain water or not? Did the rain fall from the sky? ”

"The rain is the god of God!"

Ga? You're so powerful, I can't even argue with you if you bring the gods out. You can't let me declare myself an atheist, can you? Then you can't let the son of "heaven" chop it up? No, it's still a matter of course for future generations.

Li Buqi immediately changed direction: "Then I don't know how Kong Ming Lantern flew into the sky?" Is it also the gods who trust the heavens? ”

This time it was Wang Yushi's turn to be speechless for a while. Li Buqi grabbed before he could speak, and said directly to Zhao Zhen: "Since Kong Ming lanterns can fly into the sky, what is so strange about the water that has been sprayed into the sky floating in the sky for a while?" After the water dragon sprayed water just now, there was water vapor blowing in the wind, and His Majesty noticed it. ”

Just now, Zhao Zhen really felt the coolness brought by the majesty, so he nodded and said yes. Li Buqi said: "The minister guesses that when the two water columns collided, many water droplets that were so small that people could not see clearly floated in the air, and the rainbow was formed by the sunlight with colorful light." Once there is a mist, no matter how suitable the sun is, there will be a rainbow, so the minister thinks that it is not possible to say good luck. ”

Wang Yushi saw Zhao Zhen nodding slightly and hurriedly said: "Your Majesty, the sun's rays shining on the mist into rainbows are just Li Buqi's speculation, and they can't be verified. The rainbow is transformed by the two qi of yin and yang, which is auspicious and vicious, but it is contained in ancient books, is there anything wrong? Your Majesty must not be gullible and Li will not give up. ”

Unexpectedly, at this time, Cao Tong suddenly jumped out and made up for it: "The minister suddenly remembered that Zhang Zhihe recorded in "Xuan Zhenzi" that the sun was spraying water and becoming a rainbow. The cause of the rainbow that Li Buqi said coincides with this. ”

Many of the nobles in the gang are idle, and it's just these anecdotes. As soon as he said this, many people seemed to think about it, and immediately someone said, "Yes, exactly." ”

Wang Yushi hurriedly said: "It is the water spraying on the back of the sun, and it becomes the shape of a rainbow, which is also the effect of yin and sun and yang to turn into a rainbow, and it must not be a drop of water." ”

Li Buqi said with a smile: "Your Majesty, the connection between the water droplet and the rainbow is indeed conjectured by the minister. As for whether the minister is right or not, he also wants to verify it, so he thought of a way. ”

Zhao Zhen hurriedly asked, "What method?" ”

Li Buqi asked, "There is a colorless and transparent crystal that Your Majesty may get?" ”

Before Zhao Zhen could speak, Zhang Weiji had already taken over: "Your Majesty is rich all over the world, why should you worry about crystals?" There are a lot of things made of such crystals in the harem, haven't you seen them? ”

Li Buqi said: "Those things are made by skilled craftsmen, they are beautiful, and it is a pity to destroy them." ”

Zhao Zhen said: "If you want to let people find it without thinking." ”

Cao Tong also came to join in the fun: "Crystals are not rare, they are the kind you said, I am afraid that a lot of them can be found in the Fengchen Library." All you have to do is say to Your Majesty what you want to do. ”

Li Buqi said: "Your Majesty please let the skilled craftsmen carve out these crystals according to the shape of the minister, and then put them in the sun to see if they can shine with colorful colors." If you can show colorful colors, then so can water droplets. Nine times out of ten, rainbows are water droplets that appear as a result of the sun's rays. ”

It was just a few pieces of crystal in good condition, and Zhao Zhen also wanted to know what the colorful light of the water droplets in the sunlight looked like. He immediately asked Youji to cooperate with Li Buqi to settle the matter.

The focus then finally returned to the two water dragons. I didn't say it, being able to spray water continuously to a height of five zhang is definitely a weapon for firefighting, and it is necessary to prepare it for the big building first, then Kaifeng Mansion, and then promote it to all roads. There are always thousands of water dragons in the entire Great Song Dynasty, which is definitely a big deal. But a big deal is not something that ordinary people can do, and now although Li Buqi has hugged the emperor's thigh, the foundation is too shallow, and it is estimated that something will happen if he gets a daily gold deal in his hands now. I didn't see a rainbow, some people jumped out and said that it was a bad omen, if there were high-ranking officials and nobles behind it, I don't know how many people would find the fault of Li Bu Wai. Li Buqi knows that there is no shortage of people who want to step on others to make progress.

Now generously throw out some benefits to increase the emperor's favor, and attracting nobles and high-ranking officials to interact and cultivate the foundation is the first priority, so this water dragon is dedicated to the emperor.

To be a prisoner is to serve the emperor. As soon as the emperor ordered, the craftsmen started work day and night, and it took only three days to polish a few pieces of colorless crystals according to the shape required by Li Buqi and send them to the palace.

Early in the morning, Zhao Zhen hurriedly ended the morning court, and let him push back all the unimportant things and walk out of the vertical arch hall, Chen Lin hurriedly asked the little eunuch to follow with a tray.

When Zhao Zhen came out of the vertical arch hall, he looked up at the sky, the sunlight of the white flowers was dazzling, and his nose itched and sneezed. Chen Lin hurriedly asked: "The official family has a cold?" ”

Zhao Zhen waved his hand: "I was just blinded by the sun." It's okay. ”

It rained in the second half of last night, and the sun was steaming from the damp ground, making it feel like a steamer. In the past, Zhao Zhen always hid in the room with ice at this time, but now he walked quickly to the Imperial Garden, stood in the big sun, pointed to a branch and said, "Chen Lin, you see that this place is not blocked, just here." ”

Chen Lin hurriedly bowed down and agreed, and lifted the silk silk on the tray in the little eunuch's hand to reveal a few crystals that were crystal clear. He picked up a piece in the shape of a droplet, hung the rope on the top of the tree and stepped aside. Zhao Zhen couldn't wait to come over and circle around the crystal twice, frowning and saying, "You guys also come and see, why didn't you see the colorful light?" ”

Chen Lin and several eunuchs all came around to look left and right, and suddenly the eunuch who called Wang Zhongzheng exclaimed: "Oh, official, you look at it from here, it seems to be colorful...... Well, it looks like a multicolored light. ”

"Where, where?" Zhao Zhen hurriedly turned around, and Wang Zhongzheng only showed him. Zhao Zhen stared at the past, and sure enough, he could see the colored light, but he couldn't tell how many colors there were. He hurriedly shouted to Chen Lin: "You guys also come and see, what color is this?" ”

When the little eunuch with the tray saw that the people had turned to the opposite side, he retracted his stretched neck, and when he lowered his head, he was so frightened that he almost threw the tray away. "Official, official! Look, here, here......"

He couldn't speak, Chen Lin was annoyed by the little eunuch's gaffe, frowned and came over to take a look, but also shouted: "Official, come and see." ”

Zhao Zhen hurriedly walked over and took a look, and was directly stunned. The sunlight shines on the tray and several crystals with slightly different shapes cast colorful light on the white silk on the tray under the sunlight, but there are three colors, five colors, and seven colors.

This, how is this possible? Zhao Zhen took a breath of cold air and asked Chen Lin, "Are these objects made from the prison?" ”

Chen Lin naturally knew why Zhao Zhen asked this, and immediately replied: "It's true." Li Buqi only drew the figures, and did not do it himself, these were all made by the craftsmen who were the prisoners, and the crystals were also taken out by Fengchenku. ”

Zhao Zhen stroked his mustache: "It seems that the mist really appears a rainbow when the sun shines?" ”

Chen Lin sucked like a toothache: "Now the little one really can't think of anything else." ”

Now there is a new topic in the capital - it turns out that the rainbow is really caused by water droplets in the sky.