C450 Snake Venom

After navigating a narrow staircase, Zhou Pu discovered the second floor was surprisingly spacious. An elderly couple sat on a bench by the door, holding a number ticket; the husband clutched his cheek while his wife chattered beside him.

In the glass-enclosed room, a middle-aged man in a mask, hat, and white lab coat was busy grinding a patient's teeth on a recliner. Zhou Pu