The Longfeng banknote sold by Tik Tok is actually a special commemorative banknote and a special souvenir issued by China Post. On the vibrato platform, the Longfeng banknotes sold through the postal live broadcast room contain many different commemorative banknotes. Tik Tok is a short video social software developed and operated by Beijing Weibo Vision Technology Co., Ltd. Since it was launched on September 20 16, Tik Tok has quickly become a widely used music short video community platform, suitable for all ages. The founder is Liang Rubo. Users can record or upload videos and photos through this platform to form their own works and push them to other users through algorithms. Tik Tok is not limited to mobile users, but also supports computer version and web version.