Sister Tik Tok is a short video social software of music creativity hatched by ByteDance. The user wearing a fox mask in the software is Sister C, the anchor of a dance area in Tik Tok. Its live content is mainly house dance, and its dancing is moving, just like an angel falling into the world. Her real name is Zhang Zihan, a native of Tangshan, Hebei Province, and she graduated from Zhejiang University.