When Wang Chuan fell from the scaffolding, he thought it was the end.
But he was caught by a cloud of black mist - the "observer" of the extra dimension.
"Earth is the seventh experiment." Black mist rolled over his consciousness, "The first six? Exploded, robbed, and sunk."
"You are fish in a fish tank." It sneered, "Sunlight and air are all parameters. The so-called coincidence is just an observation record."
Moving bricks, saving money, thinking about the children in the orphanage... Wang Chuan's life was just a line in the experiment diary?
"Choose," the gray light of the black mist licked his thoughts, "Return to the tank as a fish, or look at the truth outside the glass."
The remains of the first six towers are staring at the seventh tower in the universe.