Standing in front of the door, Ye Cheng hesitated a little. At the moment of entering, he endured it and listened carefully outside the door.

It's quiet in the dark room and there's no big movement. There is a shadow wandering around the house. The more its feet are more than ten centimeters off the ground, the more it drifts, the lighter it drifts like a ghost.

Wherever the shadow goes, it brings a little wave of electro-optic similarity, which can illuminate the scenery in a small distance.

The light Ye Cheng sees outside is emitted by this black shadow, which stagnates in front of the bed. After a while,...