Huh?
Suddenly, out of the corner of his eye, Principal Hu noticed the books placed beside the crib.
Electromagnetism?
Maintenance electrician handout?
Radio basics?
Principal Liu has an engineering background. Although he has put down his books for many years and picked up a teaching staff, he still understands some commonly used technical knowledge points.
These books are obviously not what a primary school student should read. Only those in communication technical secondary schools or college students will learn these things.
'Have you, classmate Yicheng, started to learn these things on your own? '
Knowledge is never acquired overnight. Without a prerequisite foundation, it is impossible to understand professional general knowledge.
Principal Liu walked slowly to the bedside and raised his hand: "Yicheng, are these books yours?"
"Yes." Li Jie nodded vigorously and said, "I... I just took a look."
"Do you understand?"
Principal Liu asked with a smile, while picking up one of the books and flipping through it.
As soon as he turned it over, his expression suddenly became condensed, and the lines were filled with dense notes and questions.
It can be seen from these rows of small regular script that the owner is definitely not just looking at it casually.
At this time, a picture had already appeared in Principal Liu's mind, a scene of a young boy immersed in studying, sometimes frowning, sometimes happy.
"The textbook is very well written, I can probably understand 70% to 80% of it."
Li Jie has long understood clearly when to be humble and when to be assertive.
For example, now, he has to work hard to show off his talent in electromagnetics to arouse Principal Liu's interest, and then lead to the next topic.
Principal Liu immediately became interested: "Oh? Then I will test you."
"Um."
Li Jie straightened up and deliberately acted like he was ready to take the test.
"Okay, first tell me how the multimeter works."
Principal Liu didn't ask any advanced questions, but just chose a very basic knowledge of electrical engineering.
"The basic principle of a multimeter is to use a..." (Xiao Xingxing is a scumbag in engineering, so I don't have enough words)
Li Jie blurted out an answer to Principal Liu's question without any thought.
Afterwards, Principal Liu asked several questions one after another, from easy to difficult, each one more difficult than the last.
Aunt Wu looked at the two people in confusion as they asked and answered questions, what kind of questions were they, what about this theorem and that formula.
Although she didn't understand it, it didn't stop her from feeling like "Yi Cheng is so awesome".
About ten minutes later, the exam was over, and the curvature of the corners of Principal Liu's mouth became wider and wider.
How can teachers not be pleased when students are so eager to learn?
Finally, Principal Liu asked a question that he had been holding back for a long time.
"Yicheng, why are you interested in electromagnetism? These are things that technical secondary school students and college students learn."
Technical secondary school students and college students, upon hearing these two words, the shock in Aunt Wu's eyes became more intense.
'You're so young and you're already learning university knowledge? '
Li Jie smiled shyly and said, "Principal, actually I... I just want to make money."
"make money?"
"Well, yes, I want to make money to support my family."
Li Jie lied without blushing or heartbeat.
"I met a neighbor a few days ago. His radio was broken, and he took the radio to repair it. As a result, he went to several stores in a row and couldn't find a suitable repair shop."
“Either the repair is too expensive, it takes too long, or there is a lack of materials.”
"So, I just thought about learning it myself. Once I learn it, I can make money by repairing radios."
In the late 1970s, although the price of radios was still very expensive, as one of the four major items of the "three revolutions and one ring" (watch, bicycle, sewing machine, radio), urban residents with better conditions could still afford it. of.
Especially in big cities like Jinling, the number of households with radios is still very high.
However, we are still in the era of planned economy, and the boom in sales has not led to the development of after-sales service.
Once the radio breaks down, it is not easy to find a place to repair it.
Go to a state-run repair shop?
This is not a very good channel. Firstly, there are too few outlets. Secondly, there are too many radios that need to be repaired. It takes too long from sending for repair to getting them back.
At this time, radio is an important channel for people to receive information from the outside world. Who wants to spend months repairing it?
Where there is demand, there is a market. Although the era of self-employment has not yet come, there are still people who take risks and repair radios privately.
It's just that there are too few people like this.
First of all, repairing a radio requires a certain amount of knowledge, and not everyone can repair it.
Secondly, the equipment to repair radios is very expensive. Take a 500-type multimeter produced in Shanghai as an example. The price of a 500-type multimeter is less than 100 yuan.
This price does not include the required industrial coupons and supporting consumables such as rosin, soldering iron, and wrapped wire.
Finally, the components needed to repair electrical appliances are also difficult to buy. Not only do various diodes need to be purchased with a ticket, they are also subject to purchase restrictions.
Without special channels, ordinary people would simply not be able to buy these things.
Li Jie had just arrived, so naturally he didn't have such resources. Qi Zhiqiang might have some, but he didn't intend to trouble Qi Zhiqiang.
As for Qiao Zuwang?
Just ignore it.
In fact, Li Jie was originally planning to ask Wen Qinghua for help, but Principal Liu was lucky enough to do so today.
Although the position of a primary school principal is inconspicuous, after decades of teaching, his students have come from all walks of life, so maybe he has some acquaintances there.
After listening to Li Jie's words, Principal Liu was silent for a long time.
'It's not easy for this kid. '
Regarding the situation of the Qiao family, Principal Liu learned a little about the situation through other channels. An irresponsible father had five children, one of whom was a baby waiting to be fed.
Life is indeed difficult.
Suddenly, Chekhov's words flashed through Principal Liu's mind.
"Difficulties and torture are like a hammer hitting the blank. What should be knocked off are fragile iron filings, and what will be forged into is a sharp steel knife." '
'This kid will definitely become a great person in the future. '
Principal Liu suddenly had an idea in his heart, even if 'Yi Cheng' wasn't as talented as he appeared, he would still become an amazing person.
'I should help this kid. '
Immediately, Principal Liu asked with sincere concern: "Yicheng, how are you studying now? Did you encounter any difficulties in the learning process?"
Li Jie scratched his head: "It's okay, I think it's quite simple, just... just..."
Seeing Li Jie looking embarrassed, Principal Liu asked proactively.
"Just what?"
Li Jie obviously hesitated for a while, and then replied: "Just... just by not practicing, I'm not sure whether what I learned is right."
