If water was poured directly from a high place, the rainbow would definitely not be seen. The water had to be turned into mist to see the beautiful rainbow.
The mist-like water vapor was the necessary condition to produce a rainbow. This was also to create a realistic environment after a rain. If one wanted to produce a mist-like water vapor, the simplest and most convenient method was to have a person hold a mouthful of clear water in his mouth and spray it towards the sun. In this way, one would be able to see a beautiful rainbow for a short time.
However, the rainbow seen this way was too small and the duration was too short. It was not good for observation. What Li An wanted to do was to create a truly beautiful rainbow so that everyone could see it clearly. Moreover, it had to be seen continuously. Therefore, he had to rely on machines. Naturally, Li An had these machines. This time, he had brought two of them for the class. At this moment, they had already been brought to a high place on both sides of the courtyard by his two assistants. They also brought along enough water.
This machine was actually a very ordinary water gun. In the car wash shops in the future, there was this kind of water gun. The speed of the water spray was very fast, and it could use the impact to clean the dirt on the car.
Because of the high pressure of this kind of water gun, it could also make the water beam into a very dispersed mist, which was very conducive to the artificial rainbow experiment. Therefore, Li Na brought this kind of water gun to the class.
A high-power water gun must be electric to be effective. A human-powered water gun was a toy. Naturally, there was a power interface here, so there was no pressure to make such a laboratory.
"The sun today is very dazzling! Can we really see a rainbow? "
"Whether we can see a rainbow or not, we will know later. Anyway, we can't wait for long."
"I say, if we really see a rainbow, doesn't it mean that whatever Assistant Minister Li says is right?"
"What does it matter? It's just some strange skills. How can it be compared with poetry and etiquette?"
"This is also true. However, our Tang dynasty really needs these strange skills now! Now, going out on the train is very stable. It only takes a day to go to Luoyang City. If it was in the past, it would take half a month. Our bones would be broken! "
These old fellows stood behind all the imperial grandsons. They kept a certain distance from each other and started whispering to each other.
Unlike these old fellows, the imperial grandsons who walked out of the room were all very excited. They were all waiting for a miracle to happen.
Li An glanced at both sides. Seeing that the two assistants were ready, he nodded and got them to start working immediately. He then looked at the crowd and said, "The show is about to begin. Everyone, get ready to watch the show!"
After saying that, the two assistants had already started the water gun and sprayed water in the direction of the sun. The mist that filled the air almost blocked the sunlight, making the entire courtyard a lot cooler.
"Rainbow, there really is a rainbow!"
"Rainbow, I see a rainbow. It's so beautiful."
"Sir, you're really amazing to be able to create a rainbow."
These young imperial grandsons were all very excited. How could they not be excited by such a beautiful scenery? This was a genuine rainbow! Moreover, it was semicircular, exactly the same as the rainbows they usually saw after the rain. This made them extremely excited.
"Rainbow, he really created a rainbow. The rainbow that has been around for thousands of years turns out to be so simple?"
"It's said that a rainbow is the bridge between the human world and the heavens. It turns out that it can be created just like that. This is too simple!"
"This is nothing. Some people even say that rainbows are insects that eat water droplets in the sky."
"It seems that these are all rumors! You can see a rainbow just by spraying some water. In this case, rainbows are nothing strange. "
"No matter what, today is an eye-opener. I didn't come in vain! Although it's just a strange technique, I still like this class very much. I just can't indulge in it every day. "
The few old fellows discussed again, looking very excited.
At this moment, Ang Lee walked over and looked at the eight old fellows. He said, "Are you satisfied with my experiment? What do you think? "
"Good, it's very exquisite. Assistant Minister Li is really amazing to be able to find the cause of rainbows. This is really amazing. We are ashamed of our inferiority!"
"Yes! Yes! This is the first time we've found out that rainbows are created like this. It's really too miraculous. "
"It seems that as long as water is sprayed like this, rainbows will always exist. This is too miraculous. I've lived half my life, but I've been deceived for half of it!"
The few old fellows were quite sensible, and all of them praised Li An's ability.
Ang Lee modestly said, "This is nothing. It's just a strange technique, hahaha! Right, if the conditions aren't good, you can actually spit out water in your mouth and see a rainbow. However, the effect is far less spectacular than the rainbow created by a water gun. "
After saying this, he walked over to the imperial grandchildren and loudly asked, "Is the rainbow beautiful?"
"Beautiful, beautiful, hahaha!"
In the stifling environment of the Hundred Sun Courtyard, these imperial grandchildren probably hadn't laughed so happily in a long time.
However, not all of the imperial grandchildren were happy. There were always a few children who were sullen and seemed to have a lot on their minds. This was very inconsistent with their age. Ang Lee couldn't tell whether they were seriously precocious or had encountered something that shouldn't have happened at their age.
However, there was an interesting phenomenon. The imperial grandchildren who were favored and had high status were in a very good mood, while the sullen ones were the children who were not favored. According to the words of the later generations, the children who were not favored were like stepmothers. No one cared about them and loved them. It was really too pitiful.
Ang Lee looked at them and found that the most depressed one was Li Huai, the eldest son of the eighteenth prince, Li Mao. This boy was young, but he looked like he had suffered a great deal. He didn't pay attention in class and was usually absent-minded.
This child couldn't be blamed. After all, his father, Prince Shou Li Mao, was the unluckiest prince in the Tang dynasty. He was a prince who was cuckolded by his own father. Moreover, this cuckolding became tighter and tighter. The Emperor favored his concubine more and more. Naturally, Prince Shou Li Mao's mood became more and more depressed.
Although the Emperor, in order to compensate his son, chose a girl from the Wei family in the capital and gave her to Li Mao, this couldn't make up for the depression in Li Mao's heart. Wei's appearance was not bad, but how could she be compared with a little slut like Yang Yuhuan? Moreover, this was a man's self-esteem problem.
When a person's heart was under too much pressure, he needed to vent. Li Mao didn't dare to vent in other aspects, but on Wei's belly, which was given to him by the Emperor, he vented. In a few years, he made Wei's belly pregnant one after another. It could be said that he had become masculine. He wanted to let everyone who laughed at him behind his back see how awesome he was to be able to make his wife pregnant one after another. Although this kind of showing off couldn't completely eliminate the depression in his heart, it was also something he couldn't control.
Li Huai, this child, was made in Wei's belly when Li Mao was depressed. Some people said that when you are depressed, the child you make will also be depressed. Li Mao's eldest son, Li Huai, was obviously born under such circumstances.
This child's birth was not the product of love, but the crystallization of Li Mao's grievance and resentment. He was born in a bad environment.
After he was born, the environment he grew up in was even worse. This was because Li Mao often frowned and sighed. As a result, Li Huai's young heart naturally developed a melancholic temperament.
When a person was young, their ability to imitate was the strongest. They would imitate whoever they were with. If they lived with animals for a long time, they would start to learn the various behaviors of animals. For example, because a child spent a long time with a pack of wolves, over time, they would start to learn the words and actions of animals. When they grew up, it would be difficult to change. In the future, they would probably have to live with wolves for the rest of their lives.
The atmosphere of a family was very important to a person's growth. The behavior and temperament of a family member would seriously affect a child's life. Li Huai grew up in an environment where there was no laughter, so he naturally didn't know what happiness was. He didn't know how to laugh, and he couldn't laugh.
When he was a little older, he seemed to know something. Although he didn't understand it very well, he knew that his father had suffered a great injustice. That was why he became so melancholic. At the same time, he felt that he was an abandoned child, an abandoned child that no one loved and loved.
Ang Lee and Li Mao weren't very close. Although he sympathized with his experience, there was nothing he could do to help. After all, he couldn't let the emperor return his favorite imperial concubine to his son! This was obviously very unrealistic.
As for Li Huai, Ang Lee could help a little. For example, he could use the opportunity in class to ask him a few more questions. When he had nothing to do, he could make him laugh. Slowly, it might be able to change Li Huai's melancholic personality and make him gradually become more cheerful.
As a good person, Ang Lee firmly believed that every blade of grass would bloom. Every child had hope. He couldn't easily give up on any child. He had to be like the sun that nourished the wounded hearts of these children. He had to make them believe that the world was beautiful so that they could grow up happily and not live their lives in depression.
In addition to the imperial grandchildren who were in class, there were many imperial grandchildren who didn't come to class in the Baisun Courtyard. They were all older. For example, the children of Gwangbyeong Of Gojoseon and Li Yu had come to school. Naturally, he couldn't come with them. It would be improper for father and son to attend classes together.
However, after the rainbow appeared, these imperial grandchildren who didn't have anything important to do all gathered together. Even many servants came to watch the fun.
"Rainbow, it's actually a rainbow."
Everyone exclaimed in amazement, as if they had seen an alien in the future.
"Father, look, there's a rainbow."
When Li Shi saw his father walking over, he quickly ran over excitedly and pulled his father to look at the rainbow together.
Li Yu touched Li Shi's head and smiled. He pulled Li Shi to Ang Lee and said respectfully, "It's only been a few years, and Assistant Minister Li has begun to teach my Shi 'er. Time flies!"
He was talking about a few years ago when he and Shiro had learned from Ang Lee. In fact, Ang Lee hadn't taught him anything. He had just taken them to see rare things in the research and development center and occasionally introduced them. He couldn't be considered his teacher. At this moment, when Ang Lee was teaching these imperial grandchildren, he was teaching them according to the standards of later generations. He could be considered a teacher.
"What Gwangbyeong Of Gojoseon said is right. Several years have passed in a flash. Now, Shi 'er has reached the age of learning. Shi' er is very smart and naughty. He looks very lovable."
Ang Lee also touched Li Shi's head and said with a smile.
After all, everyone knew the importance of Ang Lee in the Tang dynasty. Although they were all imperial grandchildren, the emperor had so many grandsons that it didn't matter if they had one more or one less. However, Ang Lee was the only great talent. The Tang dynasty could lose a few imperial grandchildren, but it definitely couldn't lose a peerless talent like Ang Lee. Therefore, they naturally didn't dare to offend Ang Lee.
The production of a rainbow was based on water vapor. That was to say, as long as you kept spraying water mist with a water gun, you could always see a rainbow. However, the amount of water carried by Ang Lee's two assistants was limited. There would always be a moment when it ran out. Therefore, the rainbow would gradually disappear after the water was used up. The moment the rainbow disappeared was the moment Ang Lee left the Baisun Courtyard.
"The rainbow has disappeared. It's time for me to go home. Everyone, please stay."
Ang Lee politely said goodbye to everyone one by one and left the Baisun Courtyard.
It was quite interesting to teach the imperial grandchildren. At least, looking at the admiring expressions of these little guys, Ang Lee had a great sense of accomplishment. This feeling made Ang Lee very comfortable.
However, because Ang Lee still had work to do, it was impossible for him to attend such classes every day. It was about five or six days a month. According to the standards of later generations, it was one class a week. It was very easy.
In the Tang dynasty, many things were monopolized, which led to a lot of unfairness. But at the same time, there was also an advantage. That was, the competitive pressure in high-end studies was not very great.
Since ancient times, many scholars had never been able to pass the imperial examinations. It could be said that they regretted it all their lives. But compared with the college entrance examination of later generations, the difference was too far. The degree of competition was estimated to scare these ancient scholars who only studied poetry and etiquette. Therefore, the scholars of the Tang dynasty were still very happy. Their competitive pressure was much less.
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