Song Jia, the official teacher of Tik Tok, is real. Song Jia, the official teacher of Tik Tok, is real. Teacher Song Jia is an officially certified beauty expert of Tik Tok and has millions of fans. She shared a lot of makeup, skin care, clothing and other aspects on Tik Tok, which was deeply loved and sought after by young people. Tik Tok official authentication is an authentication service launched by Tik Tok platform to ensure content quality and user experience.