On Greenzer 581d, two light-years from Earth, the temperature is unusually hot, and the clones live in the basement where they live, waiting for rescue. Clone Y has lost his memory for two years, and he is now completely dependent on a memory server, which is not much different from a vegetative person if the server is shut down. Tens of thousands of people on the planet are facing the same problem. The server was overloaded, and the Gliese 581d authorities limited the connection time in order to prevent people from using the public memory server for a long time. The authorities are waiting for a reply from the clones who went to Earth, but since receiving the news of the ship's blow-up, the entire planet has been plunged into grief, and the people have voted for the government to carry out two plans: 1. Move the planet to find a better place to live 2. Continue to find a way to fix the gene; Apparently the people have become disillusioned with the second method, and if a more suitable way to deal with this catastrophe is not found, the clones will soon disappear completely on the massive Gliese 581d, as if they never existed. It was agreed that finding a new place to live was the best option, and that the only target was Earth and the two surrounding stars: Hestia and HD40307g, and that if they returned to Earth, the clones would need to negotiate with the Earthlings, and that going to the other two planets would be at risk of environmental reclaim. The people of Gliese are facing an existential challenge.

In the gate of time, Liu Fei and a group of people came to the round waterfall, they looked at the drifting bottles that emerged from the upstream, and decided to dive to the bottom of the water to find out, several people put on oxygen masks and quickly dived to the bottom, the water was turbulent, Liu Fei and the clones were holding a cylindrical underwater engine in their hands, under the guidance of the engine, they dived deeper and deeper, 20 meters, 25 meters, 32 meters, 40 meters, 50 meters, several people dived deeper and deeper, this was originally the upstream of the waterfall, But when they followed the bottle that came out of the water, they found that it was not as shallow as they imagined, a few people continued to dive in, Liu Fei saw that his pressure gauge number was flipping up a little bit, it was extremely quiet here, the oxygen exhaled by several people was tumbling back and forth in the calm space, except for the color of the searchlight, almost nothing could be seen in front of them, some broken dust-like particles were coming towards them in the water, the clones turned on the luminous device on their bodies, and the bottles surfaced from the bottom of the water in groups of three or five, it seems, This was already a lot more than the predetermined depth, but in order to get a glimpse of what was going on, the clone told Liu Fei to keep him still at fifty meters, and several of them entered the deep water area one after another to explore... The clones continued to dive with their engines, and as they went deeper, they found that the color of the water had changed from dark blue to golden yellow, and they seemed to have entered a large piece of amber, and the more they found the more bottles they found, the more they were shocked by the number of bottles. From time to time, the clones took the bottle in their hands, and after a few glances, they scanned it with the scanning camera they were carrying, and then took the next bottle that floated up from the bottom. The bottle was no different from the bottles found on land, except that the color of the bottle appeared to be faintly different from the ambient light, and the torn notes still contained in the bottle. At this time, they had dived to a depth of 350 meters, only to see bottles emerge from a huge hole, which was about 50 meters in diameter, and under the illumination of the light, the drifting bottles were crystal clear, looking like jellyfish, shaking and tumbling up in the deep water.

Seeing the black hole, the clones began to recite the holy words of the time gate, they thought that the holy words could solve the mystery here for them, but there was no movement, but Liu Fei, who was 50 meters away, was nervously out of breath, he looked up, except for some faint light from the water, he couldn't see anything around him. He looked down, and the bottle was still floating from the bottom up. He grabbed a bottle as well, and through the transparent bottle, he saw the note inside. This reminded him of the time he spent with Frank, and Liu Fei thought silently: "It would be nice to have you, maybe we can know what this is for." At this time, a voice suddenly appeared in Liu Fei's ears: "All the secrets are in that tree." Liu Fei suddenly began to feel a little panicked, after all, encountering such a sound in the deep water area made people feel that there was something wrong with his head, he looked around, and found no trace. After less than ten minutes or so, the safety rope of the dive began to vibrate a little, and the two clones returned from the deep water, they saw that the deep cave was still bottomless, and the pressure gauge had reached the limit, and the clones' brains began to swell, and they decided to return immediately... The trio slowly surfaced.

"What do you see?" Uesugi asked

"I saw a lot of bottles floating up." Liu Fei replied

"We tried to go down to the source of the bottles, but when we went deeper into the water, we found that the source of the bottles was bottomless, and there was an abyss underneath the water." The clone said

"But we saw a lot of these bottles under the water, why didn't we see a few of them here when we got to the surface?" Liu Fei asked

"I guess I floated down the waterfall down the waterfall." Uesugi said

"Don't we understand that you haven't found these bottles on a regular basis?" Liu Fei asked

"Not really, except for the bottle when I came, these are really what you told me, I just knew that there was such a thing, it was really strange." Shang Shirt said

"Looks like there's something wrong with this water." Liu Fei said while looking at the water

"Mr. Uesugi, I ask for your help, and I must get this bottle out of the way before I am sent to Gliese."

"Yes, I'll try my best to cooperate with the equipment you need here." Uesugi replied

"I still heard a sentence underwater, I don't know who said it, maybe it's a hallucination."

"What?"

"The voice told me that all the secrets here are in that tree." Liu Fei said

Uesugi's face immediately darkened when he heard this, and he remembered what he had experienced when he had come here from the island, which made him unable to avoid the question of his origin, and the sacred tree seemed to play a very crucial role in the Gate of Time. He tried desperately to avoid him, but to no avail.

"You'll have to see that tree again." Uesugi said

"We will fully cooperate with you next dive, hearing is believing, seeing is believing, first unlock the secret of this bottle, let's talk about the tree." Uesugi said

"Thank you Mr. Uesugi for your support, and we will do our best." Liu Fei replied