Their real identities are two college students in Yueyang City, Hunan Province. Their names are Wu Zhengyi and Cui Ziheng, and they are friends at the same school. Because they often perform together at school, Tik Tok's short video later made them popular and became an online celebrity of Tik Tok.

Xiao Wu and Xiao Cui of Tik Tok are a pair of internet celebrities. They often perform dances and imitate jokes together in videos, which are loved by many netizens.