Ask parents to go to school

  "NE555, what a great thing!" Hu Yang pinched an integrated circuit chip with two fingers, admiring it endlessly.

  In the wooden model class's hut, Lin Zhenhua was looking at Hu Yang with a face full of expectation, waiting for him to draw an electric circuit diagram of a gate controller.

  The NE555 is a very simple and practical integrated circuit chip, which has been produced since 1971. Electronic enthusiasts have developed thousands of practical circuits with it. Lin Zhenhua had some exposure to wireless electronics when he was in high school and knew the application field of the 555 circuit. However, because he later studied mechanics, his original foundation in wireless electronics was forgotten. When he boasted to the Ministry of Finance that he could create a control system based on the 555 circuit, this system actually did not exist at all.

  "What are you looking for me?" Hu Yang asked Lin Zhenhua curiously after praising the chip.

  "I just want to ask you to design a circuit that can achieve these several functions." Lin Zhenhua handed over a note, on which he listed the functions he intended to implement.

  Poplar shook his head: "What are you kidding me? I don't know how to design circuits."

  "You won't?" Lin Zhenhua was somewhat incredulous, "Then you can tell at a glance that this is the 555 circuit?"

  He pointed to the words printed on the chip and said, "Isn't it written here? Although I don't understand circuits, I've read some materials. Such a famous chip, how could I not know?"

  Lin Zhenhua still didn't believe it and asked again: "Old Hu, is it that you don't understand the principle of 555 circuit or do you not understand electronic technology at all?"

  "I don't understand either of them." Hu Yang replied bluntly.

  Lin Zhenhua's face broke into a smile: "Really? That's great!"

  "Are you okay, Little Lin?" Hu Yang was stunned.

  Lin Zhenhua suppressed his laughter and explained, "Old Hu, you don't know, this is the first time I've heard that there's something you don't understand. You know, since getting to know you, I completely lost my confidence. Now I've finally regained it."

  Hu Yang was stunned for a while before he understood Lin Zhenhua's words and knew that Lin Zhenhua was joking. He also laughed and said, "Look at what Little Lin said, I just like mechanical technology better, so I read more books on this aspect, but it doesn't mean I understand everything. However, I think the things you're working on aren't too difficult either, there are many radio enthusiasts now, if you look around, I'm sure you can find someone who understands these things."

  "I know I know," said Lin Zhenhua, "I still have some technical materials about this circuit on hand. I reckon if we find someone who knows how to install radios and discuss it together, we can figure it out. Alright, Old Hu, I won't chat with you anymore, let's catch up another day."

  "Hey, Xiao Lin, wait." Hu Yang called out to Lin Zhenhua, who was about to turn around and leave.

  "Anything wrong?"

  Poplar took out a piece of paper and hesitated: "Little Lin, there's something I know is troublesome, but..."

  Lin Zhenhua said discontentedly: "Old Hu, between us, what's the point of being polite? What do you want to say? Are you thinking of dumping Madam Hu and finding a younger one? Now that you're short of money for the farewell dinner, are you thinking of borrowing some from me?"

  "You're talking nonsense, Xiao Lin!" Hu Yang scolded, "Playing this kind of joke on an old man like me."

  Lin Zhenhua smiled and said: "Apart from this matter, everything else is easy to discuss."

  Huyang was given a good scolding by Lin Zhenhua, but it did get rid of the awkwardness. He handed over the paper in his hand to Lin Zhenhua and said: "Little Lin, this is some book titles I found from the references when I was reading those original books. I think these books are very important. Can you use your connections abroad to get them for me? I know that if we want to buy all of them, it might be very expensive...". He wanted to say that he would bear the cost himself, but in the end didn't say it out loud, because foreign book prices were extremely high and buying all these books had already exceeded Huyang's economic capacity.

  Lin Zhenhua took the list and replied nonchalantly, "No problem, don't worry about the money, Americans still owe me a favor. These books are just a small matter for their company. Let me take a look, what kind of books are these..."

  Lin Zhenhua carefully looked at the English book list, and the more he looked, the more shocked he became: "The Influence of Turbulence on Propellers", "Noise Reduction Technology", "Complex Surface Machining"...... Old Hu, you're playing too big, aren't you?

  "Xiao Lin, these are just hobbies, I'm interested in this kind of thing. See how much you can buy, if it's really too difficult... sigh, then forget it."

  Lin Zhenhua did not go to expose Hu Yang's lies, he knew that in this world, people who can study these things with amateur hobbies are really rare. It is said that there was an idle person named Feigenbaum in the United States who had studied these things extremely boringly and even won the Nobel Prize in Physics for it, but others were formal employees of the Los Alamos National Laboratory in the United States, not a mysterious mechanical factory woodworker.

  "Lao Hu, I'll take care of these books. I'll write to the Spieser company's agent in Guangzhou right away and ask them to forward the book list to Ford. From now on, if you need any books, just let me know. I won't even ask what you're using them for, but I believe one thing - that reading these books will definitely contribute to the Four Modernizations." Lin Zhenhua used a popular phrase of the time to express his meaning.

  "Thanks a lot, Xiao Lin," said Hu Yang. "As for whether this knowledge is useful to the country, well, it's hard to say now."

  After leaving the workshop, Lin Zhenhua went to the construction site of the Labor Service Company and saw that a simple worker's shed had been set up. A group of young workers were doing interior decoration work. The orders signed by Lin Zhenhua and Chu Hongyang in Nanshi City had already been handed over to Zhao Yongqun and Peng Shaozhe, who were discussing with several workers how to prepare materials and process them. Lin Zhenhua knew that the technical content of these products was not high, and with the collective wisdom of the young workers, they should be able to handle it, so he didn't ask too much about it.

  Returning home from the construction site, I coincidentally bumped into my younger sister Lin Fanghua who had just returned from school. As soon as she saw her older brother, Lin Fanghua excitedly shouted: "Brother, you're back! That's great!"

  Lin Zhenhua was on a business trip to Nandu for several days, so Lin Fanghua asked him a few questions. Lin Zhenhua smiled and replied: "What's wrong? Are you afraid of being alone when I'm not at home?"

  "Don't worry," Lin Fanghua said, "Yang Xin is with me."

  "If I had known this earlier, I wouldn't have rushed back." Lin Zhenhua said.

  "No way!" Lin Fanghua said, "I've been waiting for you for several days. Our class teacher said that as soon as you get back, you have to go see him."

  "What?! Lin Zhenhua was shocked, "Sister, you're in trouble again?"

  Lin Fanghua was so angry that she clenched her fists and wanted to hit someone: "What's wrong with you! When have I ever caused trouble?"

  "Oh, right, since nothing bad happened in the past, why did it happen this time?"

  "Because... who said I made trouble?"

  "Why did the head teacher call my parents if I didn't cause any trouble?"

  "Because..." Lin Fanghua suddenly blushed and said, "I won't tell you. Anyway, let's hurry up and eat, after dinner you'll come with me to school, our class teacher is always in the office every evening, he said as soon as you arrive you have to go see him."