C168 The night is so hazy

Gongsun Ztian took advantage of the darkness of the night to enter the courtyard. In a little while, he found the bedroom of the general on duty. Gongsun Ztian listened attentively. He could only hear the sound of heavy breathing. He was certain that there was only one man in the room, and that there was no one else.

Gongsun Ztian thought for a bit and understood