When Wendy came out of the stairwell, her calm expression suddenly changed. She scampered into the toilet, gritted her teeth, then gently bumped her plastered arm against the wall. For the next few seconds, pain was written all over her face.

Looking at the clock, it was almost time for Melody’s daily visit. Wendy hurriedly climbed the stairs and returned to her ward.

Her arm was already in severe pain. After climbing six to seven floors in one breath, Wendy's forehead was covered with cold sw