According to the inquiry in official website, the code words of Tik Tok, Didi and Tik Tok are popular in Tik Tok. The secret code comes from the platform of "connotative paragraph". Everyone played too much on the platform and invented a secret code, Didi Didi (one * * * three horns, one long and two short), which describes that when everyone presses this horn on the road, they respond to Duan You.