The next day.

Small building.

Yang Jing had just read several important memorials, and Wang Chengen reported: "Your Majesty, Master Zhang is here, but I want to see you?"

Yang Jing put down his memorial, thought for a while, and said, "I didn't expect it to come quite quickly, see..." Yang Jing did not hesitate too much.

"Abide by the order! Your Majesty." Wang Chengen agreed.

...

Zhang Xianyong's life was obviously better than Kong Yinzhi. He had a red face, was full of energy, full of energy, and looked like a master.

"See Your Majesty!" Zhang Xianyong saluted very seriously, without any carelessness. He was a god and a real person outside. In front of the emperor, he could not bear to be a slightest air.

"No gifts." Yang Jingwei said.

"Thank you Your Majesty!" Zhang Xianyong replied.

"How are you doing recently?" Yang Jing made a simple opening.

"Thank you for your good fortune, I am doing well..." Zhang Xianyong agreed and looked at the emperor again. He didn't know what the emperor asked him to do. Could there be anything new to him?

"Oh, what I told you to do have progress?" Yang Jingwei asked again.

"Report to Your Majesty, I have been following His Majesty's instructions and have been working hard all the time, but there has been a lot of progress..." Zhang Xianyong immediately started a work report happily.

"That's good..." Yang Jing heard this for a while and said this. If Zhang Xianyong's enthusiasm was mentioned, it was beyond doubt. The supreme glory brought to him by those things now, as long as they are not fools, they will definitely put in time in this regard. The progress in research on this aspect should be considered as acceptable. From the information reported at present, Zhang Xianyong and his disciples, even some people who are obsessed with elixirs and Taoism can even be described as obsessed with the promotion of technology in this regard. There is absolutely no doubt that even the less crazy Shilin people are interested in various experiments and various experimental instruments. Purchasing experimental instruments has become a trend. This is undoubtedly of great benefit to popular science and is undoubtedly of great help to their own changes. Of course, this has also caused dissatisfaction among many people. As the scope and depth of popular science increases, the pressure also grows.

"...Well, I'm summoning Qing's family today. There's nothing else. Apart from asking about the recent situation, there's another interesting thing to share with Qing's family..." Yang Jing did not hesitate and pushed out the popular science project he had prepared.

Step by step, one by one, it is constantly launching popular science projects to brainwash bureaucrats, scholars, and people all over the world to do popular science publicity. Yang reform has been implementing it. Change requires more people to support it. It is undoubtedly better to be able to win more people. Change is not a revolution, it is not as bloody as revolution. Change should be more gentle.

"Please let Your Majesty make it clear..." Zhang Xianyong replied without thinking, and immediately, his eyes full of joy. Every time the emperor said this, there will definitely be a lot of new things. This is undoubtedly his big capital. I don't know what new and good things will be there this time.

"That's it. A few days ago, I happened to something and found it very interesting. I couldn't figure it out. After thinking about it for so many days, I couldn't figure out why. Therefore, I found the Qing family today to see what the Qing family can do and whether it can solve the mystery..." Yang Jingwei looked at Zhang Xianyong and talked about his own affairs.

Zhang Xianyong listened carefully.

Yang Jie said, do his own thing. Yang Jie first lit a candle as thick as a thumb, then dripped a few points of wax oil on the bottom of the bowl, and then fixed the candle in the bowl. Then poured clean water into the bowl. Then, cover the candle with a transparent glass beaker with the edge of the mouth facing down, and the edge of the beaker penetrated deep into the water.

"...This is something I can't figure out. The Qing family will see what will happen next..." Yang Jingwei said.

In fact, when Yang Jie covered the edge of the beaker, something strange had already happened, and the water quickly rose into the beaker.

Zhang Xianyong kept watching the emperor busy with his eyes wide. He was quite serious. He knew that the emperor would not be aimless and would not joke with him. Naturally, he was pointing out something. Therefore, he did not dare to relax for a moment and observed carefully. The water in the beaker had just risen and had an abnormality just happened. He noticed it, staring at the water in the beaker in amazement. How could this happen?

Not long after, the candle in the beaker went out and the rising water stopped at a certain position.

Looking at Zhang Xianyong who was stunned, Yang Jingwei was not much complacent, but felt a lot of oppression. For every point of science popularization experiment such as this, the pressure he was under would be greater. Since this experiment was launched, he had to be prepared to accept this pressure. Thinking of the pressure that was coming all over the sky, Yang Jingwei was silently bearing it.

"What do you think of the Qing family?" Yang Jie asked.

"..." Zhang Xianyong was stunned for a while before he came to his senses. He said, "...Reporting to Your Majesty, it's so amazing. Why did the water rise? And it's always like this and never falls down. It's really amazing. I don't know what this is..." Zhang Xianyong was indeed shocked. Although he was mentally prepared, he was still shocked when encountering such a strange thing.

"...Well, the water rise is one. Didn't the Qing family notice that the candle was extinguished? Don't the Qing family think this is interesting?" Yang Jing reminded.

"...This is really interesting to report to Your Majesty. Why did this candle go out?" Zhang Xianyong asked in confusion.

"...The Qing family also saw that this candle was not blown out by me, nor was it drained out by me with water. It was extinguished by itself after the water gradually rose. When the candle was extinguished, the water would not rise..." Yang Jie said.

"Report to Your Majesty, that's right, I can see clearly, it's true..." Zhang Xianyong immediately answered affirmatively.

"This is also the reason why I summoned Qing's family today. This interesting thing was discovered by chance. Later, I couldn't figure it out why it was like this. What is the relationship between the burning of the candle and the rise of the water? Why did the candle go out? Why is the water in this cup higher than the water in this bowl? What force supports the water in this cup so high? Why does the water not rise when the candle goes out?..." Yang Jing raised many questions in a series of questions. This is actually an experiment to measure the oxygen content in the atmosphere, which can be used to prove the existence of atmospheric pressure.

Zhang Xianyong listened to the emperor's words in a daze. He didn't know any of these questions. He was stunned.

"...Qing family, Qing family?" Yang Jingying shouted.

"I am here, I am here... I am rude. Your crime is reduced..." Zhang Xianyong quickly agreed and quickly admitted his mistake. He was distracted just now.

"...The Qing family said, why can't this candle be burned all the time? Why did it go out?" Yang Jie was stunned when he saw Zhang Xianyong's idiot. He had to tell more tips. Yang Jie was afraid that Zhang Xianyong would not be able to touch the door, and felt that he had to give some necessary tips.

"...This, this, I'm stupid, I'll ask your Majesty to teach you..." Zhang Xianyong said immediately. He was very self-aware. His foundation was nothing worth hiding in front of the emperor, so he should say whatever he should say.

Yang Jing didn't say much, and didn't stop, lifted the glass cup, lit the candle again, covered the glass cup, and did the experiment again.

The process and the result are exactly the same as last time. The water rises, and to a certain extent, the candle goes out.

"...What do you think of the Qing family?" Yang Jie asked.

"...Report to Your Majesty. I am stupid..." Zhang Xianyong admitted that he knew nothing.

"...Haha, no hurry. Look again..." Yang Jing didn't say much, lifted the cup and re-lit the candle.

"Look at your family again. If I don't cover the cup, will the candle be extinguished?" Yang Jie asked.

"...Report to Your Majesty, I won't..." Zhang Xianyong thought for a while and replied hesitantly.

"Yes, no. This is just an ordinary candle..." Yang Jie said. After saying that, he covered the glass again, and soon the water rose and the candle went out.

"...I saw something?" Yang Jingang asked.

"...Report to Your Majesty, the candle is out..." Zhang Xianyong said with his head shrank.

"…Yes, then what else?" Yang Jing led.

"...Report to Your Majesty, the water has risen..." Zhang Xianyong said with a stuttering stutter. All this was really unfamiliar to him. He was also a person who had lit candles for decades, but at this moment, he never felt that candles would be so unfamiliar to him.

"...Well, what else? For example, the rising position of this water..." Yang Jing reminded.

"...Uh! Your Majesty, I remember that the rising position of this water is roughly the same..." Zhang Xianyong seemed to suddenly find out, and immediately said happily. He finally knew nothing.

Yang Jing said with a hint of relief: "Yes, the water rises at the same position, that is, the things missing in this cup are similar..."

"Your Majesty..." Zhang Xianyong was still confused.

"... And this thing comes again every time I open the glass, and every time the candle goes out, he disappears again..." Yang Jiewei said.

"...Report to Your Majesty..." Zhang Xianyong looked confused and ignorant.

"... Then, that is to say, several questions are certain. The first is: the candle burns, and it requires something. Without this thing, the candle cannot burn; the second is: In this invisible and colorless world, there is something that can support combustion. The proportion of this thing in the world should be certain; the third is: what has become after burning? There was originally a glass with so many glasses, and only about 80% after burning, and where did the missing 20% ​​go; the last question, why does this water rise?" Yang Jingai said a lot of questions in one breath.

"...I am stupid..." Zhang Xianyong really didn't understand.

"...Yes, I don't understand this, and it is also the reason why I summoned Qing's family. After the Qing's family returned, they immediately summarized and verified the truth through exhaustive methods, and strived to reach a more credible conclusion..." Yang Jingwei said.

"...I received the order!..." Zhang Xianyong was not vague about this. This is not the first time. The emperor's methods are very simple and effective. That is, they are exhausted. In the face of exhausted, they can often come up with many interesting and useful things. Thinking of exhausted methods, Zhang Xianyong became energetic again, feeling that he could find the key to the problem and solve the mystery.

[I hope this elementary school natural experiment is written correctly.]

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