Redundancy and sister Mao Mao are the official certified accounts of Tik Tok, the signing anchor of Tik Tok, and the tens of millions of online celebrities of Tik Tok. Therefore, there is no need to broadcast Mao Mao's sister's products live on Tik Tok platform.

Sister Yu, whose real name is Yu, 1992, is from Bijie, Guizhou. She graduated from a university in Southwest China, majoring in architecture and creating short videos.