Beneath a certain building, in a place unknown to the public, there was a secret prison.
The area was vast and empty, devoid of any decorations, with only concrete and several load-bearing columns.
In this large circular space, there were only 35 cell blocks built along the walls, with 80 guards equipped with pistols patrolling back and forth between the cells. At the two entrances, one in the south and one in the north, more than ten mechanical dogs stood silently.
Strangely, the firearms carried by these people all had silencers attached, and the guards were all in plainclothes, none in uniform.
The cells were silent, while outside, a middle-aged man sat in the center of the open area, eyes closed, resting.
Suddenly, his phone rang from his pocket. The middle-aged man looked at the message and laughed, "Everyone, it's almost the appointed time, but Uncle Li Dong hasn't come to rescue you following the clues we provided. There's not even a shadow over there."