Putting Zeng Hao on the floor, Zhang Yan leaned on the side and took care of him for a long time. He closed his eyes for a while in the middle of the night. Strictly speaking, it was normal for Zeng Hao to be drunk like this after drinking so much. At least after nightfall, I didn't have much trouble and just slept soundly.
It was just dawn. Zeng Hao had been sleeping since the afternoon and had been drinking all night. Zeng Hao woke up completely, or he woke up from thirst. He rolled over from the bed and got up. He went to the table and poured three bowls of water for himself to drink. Exhaled.
"woke up?"
"Ah? Oh! I'm awake!" Zeng Hao was startled. He turned around and saw that it was Zhang Yan who came back to his senses. Only then did the feats at the wine table hit his mind. For a moment, his face was slightly pale due to drunkenness. He turned a little red, thinking of his drunken appearance, was he afraid that he would be teased by Mr. Zhang for a while?
However, Zhang Yan didn't expect to make fun of him as Zeng Hao thought. He helped to block the drink. He had to recognize this favor, so how could he make fun of him?
Zhang Yan neatly rolled up the floor mat, then stood up and said to Zeng Hao: "Let's go get some water and bring it back. I've almost used up all the stuff I washed for you yesterday."
"Ah? Sir, then I'll do it, I'll do it..."
The sky was just starting to get brighter, it was still early, but there were already a lot of early risers in Zhuzui Alley, with the largest number of people at Dashuijing. To get water, you have to wait in line for the three or two people in front of you.
Zhang Yan was standing on the edge with his hands behind his back, and Zeng Hao was queuing up with a load and two empty buckets. Looking at the honest child in front of him, Zhang Yan smiled and decided to give him a few words of advice.
"Have you learned anything from Langyuan these days?"
Zeng Hao was stunned for a moment, and then became inexplicably nervous. He knew that this was probably an impromptu test by Mr. Zhang. After thinking for a while, he said: "To answer my question, sir, I have been helping in the carpentry shop these past few days. Apart from anything else, I have learned all about the principles of wheelchairs. I feel that wheelchairs are just a facade, with more wheels. It's really If you want to use it elsewhere, it’s indispensable.”
This answer really surprised Zhang Yan. He originally thought that Zeng Hao, who had studied with Luo Changshan for many years, would be influenced by the closed school concepts of miscellaneous studies, and would be limited to specific things when looking at problems, and lacked expanded thinking. But now it seems that he still underestimated the other party. It is also possible that the Xue Xue lineage is not as closed as the outside world shows.
"You said it well. In fact, they are very simple things, and they will have different effects when used in different places. What is important is not its shape, but its meaning. Once you master the key, you can use it to transform thousands of things. This is the core concept of applying what you learn. I wonder if you would like to hear this?"
Zeng Hao nodded repeatedly. If he hadn't been carrying a heavy burden on his shoulders, he would have bowed solemnly to show his attitude of studying.
"Don't be stunned, it's your turn to fetch water." Zhang Yan patted Zeng Hao on the shoulder. Half a dozen children are working hard and carrying water is the best work.
"Oh!" Zeng Hao hurriedly walked forward. The people in front of him had already finished fetching water and left. He really couldn't stand and block the people behind him.
"You see, this wooden barrel originally floats when it falls on the water. After shaking a few times, it will sink after being filled with water. If it is filled with water, it will not sink to the bottom, but it will be difficult to float up. Why is this ?”
"Sir, the wooden barrel floats because the wood is lighter than water. The incoming water puts pressure on the barrel, so it sinks into the water. However, its pressure is limited, so it will not sink to the bottom. Only rotten wood will soak in water after being soaked. Only if you can immerse yourself in it will it sink to the bottom..."
Seeing Zhang Yan asking questions, Zeng Hao thought that he was still testing his own knowledge, so he kept carrying water in his hands and answered Zhang Yan's questions word by word using what he had learned and known.
But Zhang Yan asked again: "Lighter than water... That's true. But how to measure it? A wooden barrel can weigh one catty, and water can also weigh one catty. How to compare?"
"Sir, what I mean by "lighter than water" is that when water and wood are of the same size, wood will be lighter." Although he didn't understand why Zhang Yan would ask about this basic truth, Zeng Hao still did it honestly. answered. These things are not very advanced in the field of miscellaneous studies.
"According to your statement, anything that meets the criteria of "the same size but lighter than water" can float, but not vice versa?"
"certainly."
"Have you seen a clay pot? According to you, that thing is heavier than water, but why can it float on the water?"
"This...this is because..."
"Actually, it's not just a pottery basin. You should have seen a copper basin too, right? Isn't that thing heavier than water? Can't it also float on the water?"
"This..." Zeng Hao was immediately confused. Even the movement of fetching water in his hands stopped.
Zhang Yan smiled and said nothing, took the bucket from Zeng Hao who was deep in thought, continued to fill up the water, then picked up the burden and walked back. And Zeng Hao followed behind as if he had left his soul, mumbling something unknown.
It wasn't until Zhang Yan refilled the water tank at home after going back and forth several times and sat down to drink tea and have breakfast that Zeng Hao looked at Zhang Yan with confused eyes and said, "Sir, what's the point of this?"
"Actually, the "weight of the same size" you know is not wrong. It's just that the specific difference in "size" is missing. A piece of copper weighs no more than a palm and weighs two or three kilograms, while a piece of water the size of a palm weighs only three liang. Many. But a palm-sized copper block can be made into a large washbasin in the hands of a craftsman. At this time, should the "size" be compared with the size of the copper block before or with the size of the washbasin after being extended? How about comparison?"
After Zhang Yan finished speaking, he saw that the confusion in Zeng Hao's eyes had dissipated a lot, and there was a touch of surprise. It should be the joy that you feel when you lift a little veil of nature.
However, Zhang Yan himself knew that his explanations about buoyancy were neither precise nor concise. If you put the answer sheet on earth like this, all the points will be deducted.
However, this is already the answer that Zhang Yan came up with based on the general logic of natural subjects in the wilderness. There is no need to be so precise, all he has to do is "guide". As long as a true scholar has a correct direction, he will gradually figure it out.
"Look, what you have learned does not make sense on a mere "bucket problem." This is actually the disadvantage of working behind closed doors. Knowledge comes from life, from everything in the world, and where it should come from and go in the end .”
"Sir, is this the meaning of "applying what you have learned" that you have always mentioned?" Zeng Hao seemed to understand the real purpose of Mr. Zhang's test on him today.
"Hahaha, this is my family's opinion. I don't dare to say that it is definitely right, but at least it can give you another reference for your future studies. Learning is not just about getting in and not getting out. Are you right? Okay, although what I'm talking about today is Not much, but I believe you will have a lot to think about when you come down. Eat first, then come with me to see the new house after dinner. Take your time to learn, and think slowly about things you don’t understand."
