Zhao Kai closed his eyes too many times, and so he died. His body lay in the morgue, only to turn up in his own bed the next day. Six others remain at the Hongliutan Base. After closing their eyes, each of them saw the same shadow: it was learning how they walked, how they spoke, and how they entered a doorway. The satellite phone can't get through, the gates are sealed shut by something gray and white, and the ceiling grows lower by the day. One person wants to escape, another wants to dig all the way down, and someone sits on the floor, repeatedly drawing a symbol they can never finish. Don't close your eyes. The moment you do, it will already have learned every way you can be.