Regarding Lin Chong's "return" to Earth, the technical details of the material exchange.

704 thoughtfully made a FLASH animation.

"First of all, don't, never think of this material exchange as opening a channel and then both sides throwing things into it."

The short-haired girl in the FLASH animation makes a gesture that requires attention.

The actual physical description should be as follows:

A rubber band appears on the animation.

The kind that little girls dance on the street.

Then, at the two ends of the rubber band, "Motherland" and "Lin Chong" stood respectively, both of them pulled the rubber band, and each held an "egg" in their hands.

There is a baffle in the middle of the rubber band.

The rubber band keeps stretching longer and longer.

The short-haired girl in the animation jumped out again:

"The magnetic field that allowed Lin Chong to travel through is distributed in two universes. The numerical proximity of the two ends of the magnetic field will bring about huge kinetic energy of space and time. The rubber band is stretching away, but in terms of specific physical manifestation, the 'Earth' and 'Lin Chong' are getting closer."

"But because of this barrier, which we call the 'universe boundary', the magnetic field cannot affect the 'eggs' in their hands, and the two 'eggs' can never meet."

The short-haired girl in the cartoon shed sad tears.

"But at this moment, Professor Yang's recently discovered 'Principle of Multiverse Magnetic Field Symmetry' came into play. We fired a high-energy proton from Earth and broke the baffle!"

A ball with a red background and a yellow star flew in from the side and shattered the baffle.

"Whoosh!" The rubber band bounced the earth and the "egg" in Lin Chong's hand towards each other. The two exchanged the "eggs" in their hands and laughed heartily at the same time.

"There are two key points in the whole plan. The first is where is this 'baffle'? Through the magnetic field, we can theoretically sense the energy on your side and use it to determine a coordinate, but the energy level must be large enough. Theoretically, the number is as follows..."

A long string of numbers appeared on the screen.

The power of a small tactical nuclear bomb explosion.

"The second key point is that the substances exchanged by both parties must be of equal amounts. The length, width, height, volume and weight must be accurate to millimeters and micrograms."

"So our approach is: we make the 'egg' as big as Lin Chong's 'egg' would be."

"Through videos and pictures, we restored it. I have to say that the precision of Lin Chong's hand-made work is very worthy of praise!"

A group of animated characters appeared, clapping in the cartoon.

"Let us now look forward to the moment when the great hero 'returns'!"

I watched the cartoon.

The chief engineer began to make the final mobilization for Lin Chong.

"Lin Chong, don't be afraid of hardship or fatigue. Even if you fail this time, don't be discouraged. You have the motherland behind you. You don't have to be afraid, worried, or panic." The chief engineer said with his eyes shining.

"But my demon pill has only completed the 846th level..." Lin Chong was indeed a little worried. He was worried that he had let down his motherland and his people.

The 100-kilometer collider costing 180 billion yuan was a waste of time.

"Don't be afraid. You have to understand your significance to the country. Even if you fail this time, as long as you are still there, you symbolize an infinite possibility leading to the future. Your significance is inestimable." The chief engineer consoled him kindly.

"Let's repeat the technical details. Twenty-three hours later, you will start the energy explosion on time to create a lighthouse. Once the Earth detects the change in the magnetic field, it will send a particle to the target location through the particle collider within three minutes..."

"According to Professor Yang's theory, as long as this particle reaches your world, it can temporarily activate the material exchange channel between the two worlds..."

"Well, the word channel is not precise. Material exchange is not a channel, but an electromagnetic field similar to a catapult. Theoretically, it is only enough to launch an object of 0.82 cubic meters and weighing no more than 192.5 kilograms..."

"Pay attention, the mass and volume we launch must be equal..."

"The electromagnetic field is invisible to the naked eye, so you can't observe it over there, but it doesn't matter. Our magnetic fields are consistent in relative position in the room, and we can detect it here. You can put the materials in the designated location and wait for the magnetic field to form a catapult shape..."

"The magnetic field ejects and travels through two universes. We don't know what will happen in the process. Maybe it will be a universe of absolute zero, maybe objects in higher dimensions will be disintegrated, or maybe it will travel between a black hole and a wormhole..."

"It is very dangerous. It is not recommended to teleport living beings."

"The intersection between the Earth and you only lasts ten minutes. The window period for magnetic field ejection is no more than three seconds. Theoretically, it will appear one minute after the high-energy protons penetrate the 'universe boundary'. Therefore, the manufacture of the lighthouse, the launch of protons, and the anchoring position must be completed within eight minutes..."

"It doesn't matter if you exceed the time limit. In eighty months, you will still return to Earth. By then, I will only be sixty-seven years old. I will still have time to see the miracles you create."

The chief engineer's optimism indeed infected Lin Chong.

"How is the research on void particles going?" Lin Chong suddenly brought up this topic.

"There has been no progress. Time is too tight and there are too few samples. Even if we know that it was stimulated by the snakes over there, we have no idea how to apply it. Professor Yang's team is going to give up this option this time." said the chief engineer.

"I have an idea." Lin Chong's eyes sparkled. "There is no scientific basis for this, and I don't understand physics, but my intuition is that this might be effective. Can it be used as an alternative option?"

"Oh, can you tell me about it?" The chief engineer asked with great interest.

"That's right, I think I can reverse activate this anchor point..." Lin Chong expressed his thoughts.

Lin Chong has had such a vague concept since he learned that void particles are a kind of radiation and will remain on the earth for a long time.

Professor Yang's team would not think from this perspective, probably because their minds are still bound by the rules of physics, while Lin Chong is now considered half a practitioner, and from this point of view, he has some different inspirations.

After Lin Chong finished speaking, the chief engineer blinked and said after a while: "Will this work... Isn't it a bit too frivolous... Wait, I'll call Professor Yang to listen, he is an authority."

Just a few minutes.

The chat window between the two people suddenly jumped and became three.

There is no wrong version in the 1619 book forum!

And in the extra window, there is an old man who is very familiar to Lin Chong. He is already in his 90s, but his eyes are still bright. These are a pair of wise eyes that can see the truth in the fog of science. He is a great "earth-level" scientist.

"Hello, Mr. Yang." Lin Chong stood up immediately.

Lin Chong naturally recognized this person, a national scientist of the highest caliber.

"Hello Lin Chong, it's the first time we meet, but I've heard of you for a long time." Professor Yang said with a smile.

"I have long heard of your great name!" Lin Chong said hurriedly.

"My reputation is in the past, but your name will be written in future history. I think we should stop bragging about each other's business." Professor Yang smiled and waved his hand. "Lin Chong, do you have any new ideas?"

Lin Chong then told him his thoughts.

Professor Yang was silent for a while. Lin Chong was worried, but suddenly Professor Yang said, "I agree to use this plan as Plan B."

"Our team will make a complete work plan. I will arrange the work now. By the way, Lin Chong, are you interested in meeting all members of the 704 project team?" Professor Yang suddenly said with a smile.

All members of 704...Lin Chong felt it was a bit sudden.

Professor Yang smiled and said, "You will be on a mission soon, why not meet them? Many of them regard you as a hero and idol. Don't worry about confidentiality. They have all been screened through various levels according to the confidentiality standards used when developing the atomic bomb."

Hero, idol... are you talking about me? Lin Chong stood up again unconsciously.

Professor Yang left the camera for a long time, probably to call someone.

Then, a dark-skinned man in his forties or fifties appeared in front of the camera. He was wearing glasses, but he looked more like a soldier.

"Shi Junsheng, director of the National Laboratory's High Energy Physics Laboratory..."

Bang! He saluted Lin Chong.

Lin Chong was a little at a loss.

Immediately, the black guy was pushed away, and a girl with a ponytail came into the camera. "Lan Mengdie from the Equipment Manufacturing Department! Lin Chong, your Mi Qingzi was modified by me. This is our first meeting, please take care of me on the stars~"

"What nonsense are you talking about? What star? Lin Chong is in another world, outside of time and space!" An older woman patted the ponytail girl's head, walked into the camera and said to Lin Chong with a smile: "I'm from the mathematics department, my name is Xu Ting, Lin Chong, take good care of yourself over there, drink more water, and don't catch a cold."

"My name is Shen Ling, from the Equipment Department. I collected most of your 10G data. If you have any questions, just follow the instructions above. I believe in you, you are the best!"

"Hu Xianyong, I will be in charge of weapons research and development. Leave the electromagnetic cannon you want to me!"

"My name is He Biao, and I'm a psychiatrist. Although you may not need one for the time being, just tell me if you have any concerns."

"My name is ..."

"I……"

Nearly a hundred people showed their faces in front of Lin Chong one by one.

Lin Chong knew that the entire 704 project had been running for nearly four years. According to the highest confidentiality standards, these one hundred people had no holidays and were not allowed to leave the base. They always stayed behind Lin Chong. No matter what Lin Chong needed, they would meet Lin Chong's needs as soon as possible.

If Lin Chong orbits the earth like the moon, then these people are like Lin Chong's eternal satellites.

Lin Chong couldn't help but raise his hand and salute them.

Second update~Please recommend~