C213 Yin and yang

Zhang Ya looked at me with frantic eyes and nodded vigilantly.

I looked around the principal's office. There were a few old wooden bookcases, dusty desks, an old-fashioned safe, and a portrait on the wall.

Zhang Ya walked to my side and unconsciously held my hand. "Teacher, stop looking. Let's get down to business!" There are actually women's paintings hidden in the Principal's office