In the depth of 10,000 meters, an ancient civilization that has been silent for 45,000 years is discovered.
An advanced civilization native to the earth, it is not an alien visitor - it is the first and only being born on this planet to break through the cognitive barrier. He was called "Xu" and was born in the catastrophe at the end of the Cretaceous 65 million years ago. He voluntarily shut down all external functions 45 million years ago and exited the scene as "non-existence", leaving only one door.
Liu Wencheng, Lin Ye, Zhao Cheng, and Wang Yang—the four scientific expedition team members who accidentally penetrated the deep-sea energy barrier became the first visitors to this giant city who had been waiting for tens of millions of years. Their respective fates have long been deeply bound to "Xu": Liu Wencheng's daughter Niannian's brainwaves are synchronized with the Giant City's signal. Zhao Cheng triggered the beacon left by Xu on the rock wall in the Neanderthal cave twenty years ago. Lin Ye's tactical bracelet contains the deathbed recording of her teammates that she personally killed seven years ago. Wang Yang's right hand began to emit silver-blue fluorescence at the same frequency as the Giant City barrier.
"Ruins" has only one thing left for future generations of civilization: Leave it to those who find the direction.
In deep space, an alien fleet attracted by a beacon is heading towards the earth.
From the deep sea to the deep space, from being sheltered to being independent. Humanity must make its first choice under the watchful eyes of the silent sower.