Drip.

In the cold bathroom, the sound of dripping water echoed. Qin Nuo, wearing black and white canvas shoes, stepped on the damp floor.

He glanced at the dark corner of the dead end, then moved to the sink to wash his hands.

"The cat-and-mouse identity in game mode isn't strictly defined. As long as you conceal the player's identity, no one knows if you're the rat or the cat."