(Foreword)

Invisible hands are quietly pinching your throat.

(Text)

October 30, 2021 at 7:30 a.m

After more than half a month, my mood calmed down a little. Since the laboratory is still under police investigation, the location of our research team has also changed.

The lush woods passed by me at an even speed, the birds hid in the trees, and two or three cows in the rice fields munched on the grass and looked over, and I was about to look closer, but it was gone.

"Ah~~" I yawned and looked through the window glass at this "raw" rural scene.

Zhang Xinran asked the members of our research group and professors to visit the AEF research center in a remote area. So not only the students, but also the professors, got involved and got on the bus with us to the AEF research center.

The speed of the car suddenly slowed down.

Professor Twilight glanced into the distance, then turned back to us and said, "Students, you see, the five-story building in front of you is our research center.

As I listened to Professor Twilight's description, I poked my head out and looked at the five-story building. Strange to say, there is obviously a "pristine" countryside near here, but there is such a modern building in this seemingly primitive land. It's almost secluded, like a deliberate attempt to hide it.

I made a special eye out of my mind to the farm opposite the five-story research center, which was facing the building, about 50 meters away, with a large white canvas on top of it, which seemed to keep the farm's fruits and vegetables warm. "AEF Research Center, I'm going to unravel your mystery!" Cui Li, who was sitting next to me, said with excitement on his face.

"Yes, yes, I'm waiting for you." I shook my head helplessly.

The car stopped, and the doors slowly opened.

Professor Wu, who was standing at the door of the car, specially instructed us: "All actions will be under Zhang Xinran's command later." ”

"Professor Wu, you're welcome. The main thing is to listen to the staff inside. Zhang Xinran humbly conceded.

"What's so polite, I'll only listen to myself anyway." Cui Li muttered quietly and got out of the car after Lecturer Hu Zaide, while I followed Cui Li unhurriedly.

AEF is a well-known technology company, and when I stood in front of this magnificent five-storey modern building, I realized that the entire building was a solar-powered storage and power generation facility.

"What? Look silly? Nowhere in the building is electricity from the power plant, it's all from solar energy. Zhang Xinran stood next to me at some point, with a smug smile on her face, "Not only that......" Speaking of this, she suddenly clapped her hands, and then the staff standing at the door of the building pressed the remote control button in her hand with understanding.

I saw that the original dark blue glass of the building suddenly turned into a piece of transparency, and then it was like wearing an invisibility cloak, the glass in front reflected the scene behind, and the glass in the back reflected the scene in front, so that the whole building and the surroundings merged into one and disappeared out of thin air.

"It's spectacular, and I'm amazed by your technology!" Professor Wu said excitedly.

We followed Li Ruina into the building, and as soon as we entered, two security guards stopped us and brought us two boxes with electronic numbers inside.

"Ms. Zhang, this is ...... What's going on? Professor Twilight asked, confused.

Zhang Xinran looked sorry and explained to us:

"Guys, I'm sorry because something inside involves the internal secrets of our AEF company, so everyone who enters the research center must wear this 'report bracelet'. This bracelet has an infrared positioning function, which will report your position to us in real time and play a supervisory role.

Of course, we are not suspicious of you, but we ask for your understanding because of the company's regulations. ”

"I see, understand, understand, this is also how it should be." Professor Twilight was the first to nod in agreement, and took the lead in bringing the "report bracelet" under the guidance of the security personnel.

The others followed Professor Twilight's lead and wore "report bracelets" behind him.

After all of us brought the "report bracelet", we took the elevator to the top floor under the leadership of Zhang Xinran.

"Ding~" The door opened.

The first thing that catches our eyes is a holographic projection similar to the underwater world, and the commentary of the female voice that matches the projection comes to our ears:

[1] Paleontologists have discovered ancient creatures dating back 635 million years to the Obabin sea scorpions, the earliest creatures of the Earth lived very much like today's sponges, with roots rooted in the ocean floor and filtering food particles from the water.

Fossils record the earliest appearance of life on Earth 3.5 billion years ago.

Some experts have proposed that as the earth gradually cools, simple organic compounds (single molecules) gradually form, and when mixed, more complex mixtures (polymers) are formed. Later, ocean currents collect these large particles to "hot spots" such as coasts and deep-sea hot springs, where they may eventually form the first protocells. There is also evidence that the first cellular replication used ribonucleic acid (RNA) rather than deoxyribonucleic acid (DNA), and that DNA replication took a very long evolutionary period to emerge.

The Cambrian explosion of life.

In 1909, Charles Wolcott, an American paleontologist and secretary of the Smithsonian Institution, discovered the Burgess shale at the Burgess Pass in British Columbia, Canada, which contained the oldest known examples of many important fauna groups in the chemical record. Trilobites live during this period.

Invertebrate dominant period

The Ordovician period began 500 million years ago. Algae did not change much, and trilobite numbers still topped the list. At this time, the number and species of other invertebrates surpassed that of the Cambrian. The most common are corals, brachiopods, gastropods, sea lilies, and nautilus, among others. 【1】

……“

"Che, I've learned this knowledge at the Museum of Natural History a long time ago." Cui Li muttered quietly, reaching out to the images projected into the air.

"Cui Li, don't make trouble, we're not here to play." Xia Cheng accused.

"I'm playing somewhere, I'm just learning." Cui Li said unconvinced.

"Alright, alright, let's go quickly." Zhao Yuyu urged Xia Cheng and Cui Li.

We continued to walk under the leadership of Zhang Xinran.

[1] ——Excerpt from Baidu Encyclopedia "History of the Earth"

(End of chapter)