子撑父菊

What was written on the piece of paper was very simple. Before midnight every morning, the unused practice room on the seventh floor must be tidied up. Abnormal situations must be reported promptly. The wooden sign is the key to opening the door of the practice room. As long as there is no one staying in the practice room, you can use the wooden sign to open it. If you violate the regulations, you will be held responsible....