After the cabin door opened, the tall and plump US President Aiden Victor walked down the ladder that was opened on the inside of the cabin door and got off the plane.

Behind him were several fully armed soldiers holding M85 multifunctional automatic rifles (strategic rifles that integrate weapons, missiles, smart gliding gun launchers, laser rangefinders and other functions).

Although the military uniforms are also one-piece digital camouflage uniforms with a main color of dark green, the cutting styles are different from the US military combat uniforms, and it is impossible to tell which country's army they belong to.

After Aiden and the soldiers approached the wooden house, Jose touched a few small CDs in his arms with his left hand, lowered his head and raised his right hand to cover his eyes, while Steyr simply sat down on the ground, looking up to the sky and sighing.

Because they saw that two of the soldiers behind Aiden were obviously escorting the US president with guns.

Behind a half-collapsed villa on the seaside in Dalian, China, with other parts looking crumbling, there is a yard the size of a basketball court, in the middle of which a large blue square tent with "Emergency Disaster Relief" printed in white in Chinese is erected. Zhang Qian and

Father Zhang Da was sitting on two small white plastic stools beside a small yellow wooden table in the tent, tinkering with various equipment.

Zhang's mother was cooking fish porridge in an aluminum pot on the stone stove outside the tent. The fish was caught by Zhang Qian and Zhang Da just after they went to the beach.

Before entering the state of emergency, Zhang Qian and her parents bought and stocked up rice, which was enough to last for a long time.

Near the community where the Zhang family lives, the government has set up a distribution point for daily necessities. Each person can receive a bucket of water, three or two meters or noodles, one or two meters of meat and some vegetables and charcoal for free every day.

However, Zhang Da believed that he still had surplus grain and some canned meat. He had already opened up several vegetable plots in the two large yards in front and behind the villa and raised more than a dozen chickens. He did not need to receive the food allotted by the government for the time being, so he could

Give the food to other families who need it more. Therefore, apart from water and charcoal, the Zhang family did not start receiving other supplies.

When Zhang Da was tinkering with the carbon fiber frame electric car that was lying in his yard, he found that the strong neodymium iron boron magnet used in the motor was corroded by the iron in it, and the entire magnet collapsed into powder, but it could still absorb the edges.

He took part of the powdered steel parts and came up with the idea of ​​repairing the radio and making a simple generator.

The battery used in this Wuling Hongguang i electric car is a graphene capacitor battery, which can travel more than 3,000 kilometers on a single charge, and the charging time is only five seconds.

In the evenings these days, the Zhang family can use the car lights for lighting, because the battery pack, wiring, and car lights do not contain steel materials.

Zhang’s mother originally thought about using an induction cooker and an aluminum pot without steel parts to cook rice, but the aluminum pot could not be used on the induction cooker, so she had to give up. Most other heating appliances have been scrapped because they contain steel.

Zhang Da took advantage of his daughter and wife not paying attention and ventured into the basement of the dilapidated house. From the wooden shelf where he stored antiques, he took out a Desheng brand rechargeable radio produced in 2000.

There were not many but not too few iron parts in the radio. Zhang Da tried his best to slowly grind aluminum alloy on a whetstone to replace the original iron parts.

The most critical speaker magnet was left to Zhang Qian. She first used mud to make a mold that was similar in shape to the original magnet.

Then the magnet powder remaining in the electric car is added to the strong glue and condensed into a small piece of "magnet" in the mold.

After making various substitutes, Zhang Da reassembled the radio, put the power plug into the power socket in the car, pressed the power button of the radio, and it rang.

Before the "end of the world", although traditional radio stations have been completely networked and old-fashioned radios can no longer receive as many official radio programs as they did one or two hundred years ago, many radio enthusiasts still like to send broadcasts by themselves, so they use old-fashioned

The radio can still receive some weird sounds sent by individuals, such as singing, telling stories, reciting poetry, or swearing.

Zhang Da tuned the channel for a while and did not receive the messy stuff from before, but several channels played a voice: "People across the country please rest assured that the government will set up as many emergency resettlement sites as possible for everyone and distribute emergency supplies free of charge."

Materials, I hope everyone will abide by the law, obey the arrangements and instructions of the nearest police and military police personnel, and work and live with peace of mind. Our scientific researchers are solving various difficulties caused by steel without steel one by one, and have obtained many breakthrough research results!

Hope will definitely belong to us, victory will definitely belong to us!"

After this passage was repeated more than a dozen times, these radio channels began to uniformly broadcast various current affairs news.

Zhang Da said while listening to the news: "Let me just say, there will definitely be a way. Even our two liberal arts students can restore the function of the radio. With so many scientific and technical personnel in the country, we will definitely be able to solve all the problems caused by the lack of steel."

kind of problem."

Zhang Qian said: "That's true, but what I'm worried about now is that the enemy's so-called rebellion started today. I don't know the news about this..."

Zhang Da nodded and said: "Indeed, I don't know where the so-called rebellion started. I hope it won't happen in our country. I will turn down the channel again to see if I can receive any other news."

However, after Zhang Da adjusted the channels several times, there were still no other channels except the news broadcast on **.

The next step is to make a generator in case the car loses power when the battery is exhausted.

Generators are usually composed of stators, rotors, end covers, bearings and other components.

The stator consists of the stator core, wire windings, machine base and other structural parts that fix these parts.

The rotor is composed of rotor core (or magnetic pole, magnetic yoke) winding, retaining ring, center ring, slip ring, fan and rotating shaft.

The stator and rotor of the generator are connected and assembled by the bearings and end covers, so that the rotor can rotate in the stator and perform the motion of cutting the magnetic lines of force, thus generating an induced electric potential, which is led out through the terminals and connected in the circuit to generate current.

Of course, under extreme conditions, some of the above-mentioned minor components can be omitted.

After the father and daughter discussed the general plan, Zhang Qian first dug a small hole in the lid and the center of the bottom of the complete empty 600 ml Coca-Cola plastic bottle.

Then break apart a large plastic coat hanger to obtain a long thin plastic stick. The stick can just be put into the bottle from top to bottom and both ends can extend ten centimeters.
Chapter completed!