Return to the red age

In the next few days, Section Chief Hou led Liu Hai through milling machines, grinders, and boring machines. He also found some unused tools and taught Liu Hai how to sharpen them.

Li Dali ate Liu Hai's fish, and became more and more attentive. He came to help Liu Hai with tutoring every night. Liu Hai's welding technology improved rapidly. Even Section Chief Hou said that Liu Hai's technology was already very good. He had learned it for a long time than the other three. All apprentices must be good.

Liu Hai often went to the scrapyard for a walk, and finally on Saturday, he found a can, but it was not a gas can, but an oxygen bottle.

What Liu Hai doesn't know is that our gas tanks and oxygen tanks also started from picking up rags. They seemed to be picked up by foreign mountaineering teams. The oxygen bottles and fuel tanks carried by the mountaineering teams were picked up by us. , and then it started.

At this time, there were gas tanks and gas stations in Kyoto, but the proportion was very low.

This oxygen bottle has a dent. I don’t know why. Even if it is repaired, this thing cannot be used anymore because the metal is tired after the dent is repaired. I took out the tape measure and looked at it. The diameter is 15.9 and the height is 65.

Liu Hai didn't know if the specifications on the back of the oxygen bottle had changed, after all, so many years had passed.

"Take this down for now." Liu Hai felt that this was okay.

Taking the oxygen bottle back to the motorcycle factory, Section Chief Hou looked at Liu Hai holding this and asked, "What is Xiao Liu doing?"

"Chief Hou, I have an idea here..."

"I think the combination of mortars and heartless cannons seems to be causing trouble?" Liu Hai made some gestures and then finished.

Section Chief Hou looked at the lawsuit and asked, "Isn't this thing accurate? Oxygen bottles are also very expensive?"

"Chief Hou, it's so powerful. Look at this thing. Is it the same size as a heavy artillery shell? It may not be useful in field battles, but what about street fighting?" Liu Hai gestured to Chief Hou with the oxygen bottle.

"It's really..." Section Chief Hou looked at the oxygen bottle at this time and compared it with the heavy artillery shells he saw.

"Can you elaborate more?" Section Chief Hou continued.

"No, I just have this idea. There are still many things I don't understand. Add a mortar tail at the back, but I don't know what the size of the tail is. Last time I asked Teacher Zhu from the University of Technology for advice. I will do it again this Sunday. Ask." Liu Hai shook his head and said.

"Well, just tell me if you need it." Section Chief Hou didn't think it was very powerful. After all, we also have artillery now, but we can't dampen Liu Hai's enthusiasm. There's nothing wrong with giving it a try.

"Thank you, Brother Hou." Liu Hai breathed a sigh of relief.

On Sunday, Liu Hai continued to come to the literacy class. Teacher Zhu looked at Liu Hai's homework and was very happy because Liu Hai was also studying during working hours and the learning progress was also very fast.

Xiao Lin is still sitting next to Liu Hai. The little girl has two pigtails. She also does her homework in class. After class, she goes out to play with Teacher Zhu, and even asks Liu Hai to come with her. Liu Hai doesn't go out easily to do research. I got used to it after sitting for hours at a time.

At noon, Teacher Zhu insisted that Liu Hai go to dinner together. Teacher Zhu drove Xiaolin, with Liu Hai behind, to the University of Technology, which was about ten kilometers away.

"Master's Wife." When they arrived at Teacher Zhu's house, Master's Wife hurriedly started cooking when she saw people coming, and Liu Hai said hello.

"Xiao Hai is here, sit down quickly." The teacher's wife greeted Liu Hai with a smile.

"Okay." Liu Hai nodded and found a place to sit down.

For lunch, we had rice, fried meat with fungus, egg and vegetable soup, and roasted tofu.

"Xiaohai, eat vegetables, it's time to grow."

"Thank you, Master, I'll do it myself."

"Teacher, Mistress, if you want to buy meat in the future, you can come to me. Dahongmen Meat Factory is not far from here." Liu Hai said after eating.

Just when Teacher Zhu was about to refuse, the teacher's wife said: "It's not a good relationship. We usually go there sometimes, and there's no good meat."

"No tickets are required there, and the price is cheap." Liu Hai added.

Teacher Zhu asked: "This won't affect you, right?"

"No, their factory will export part of it. Foreigners don't want water or other things. The exit needs to be repaired neatly..." Liu Hai said.

After eating, Teacher Zhu tutored Liu Hai, while Xiao Lin went to take a nap. Children should have a good rest.

"Xiao Hai, you can start learning English." Teacher Zhu said as he was also thinking about Liu Hai's learning.

Liu Hai can not only speak English, but also Russian and German. When he heard this, he immediately nodded: "I listen to the teacher."

"Let's leave a little time at the end and I will speak English to you." Teacher Zhu was very satisfied with Liu Hai's attitude.

"Teacher, does the distance a cannonball flies have something to do with the amount of powder it charges?"

"Yes."

"So how is this calculated?"

"This is more complicated, involving physics, mechanics..."

"Teacher, how did our heartless cannon calculate the distance?"

"This seems to be a test, right?"

"Teacher, how do you calculate the tail fin behind the mortar..."

"this is……."

While taking a break from homework, Liu Hai asked a lot of questions.

"Xiaohai, take this physics book and read it first. If you don't understand something, write it down. If you want to study artillery or something like that, you have to study not only physics, but also mathematics, chemistry..." in the evening. At that time, Teacher Zhu took a physics book and showed it to Liu Hai.

Physics at this time does not have as many things as those studied behind bangs. It can be said that physics in modern high schools is almost equivalent to that in college at this time.

The faster mankind develops, the more knowledge is involved. Later, physics was divided into as many majors as mechanics alone, and how many people fell for these two simple words.

Liu Hai went to the Dahongmen Meat Factory again and got three kilograms of pork suet. Of course, he paid for it. The better the relationship, the more clear it must be, otherwise, everything will be a mess later.

When you get home, light a fire. First put some water in the aluminum pot, then clean the pork suet, cut the pork suet into pieces, and put them in the pot. To refine the pork suet, you need to add water first, so that the pork suet will be very white.

Soon the fragrance filled the air. The second uncle, holding a cattail leaf fan and wearing a vest, greeted Liu Hai: "Xiao Liu, where are you refining the oil?"

"Second uncle, have you eaten?"

"Eat, you haven't eaten yet?"

"I just came back after going to make up classes."

The second uncle looked at the lard oil in Liu Hai's pot. They were all the best. There was no way to cover the pot while the oil was being refining.

Of course, the second uncle didn't ask what was going on. Snakes have their own ways, rats have their own ways, not to mention Liu Hai is still a cadre.

"Brother, I'm refining oil. Come to my house tomorrow night to eat chicken, and the second uncle will come with you." Xu Damao greeted at the door with two chickens.

"Hey, Xiao Xu is pretty good."

"There, there, I bought it from a fellow villager who went to the countryside."

Movie projectionists were very popular at this time. There were many places where movies were shown, and you had to walk more than an hour to see them. In many cases, these chickens were almost free, let alone if you had to pay for them.

"Xiao Liu is learning benchwork?" The second uncle was about to leave when he saw a vise and files in the next room, so he asked.