C56 Masturbation

Through the window's window, I saw that Cheng Yuee had already opened the box. Just as she opened the box, a white substance sprayed out from the box and onto Cheng Yuee's thigh, but she completely ignored it, and placed the box on the sewing machine instead.

Immediately after, Cheng Yuee took out a piece of cloth from the box. In her right hand