Beep, beep, beep Mett is a famous fitness instructor in Korea, and later shot a short video and became popular on the Internet. Mette signed a contract with Billie Billie, and now he has become a fitness blogger of Billie Billie. Fans can go to Mile Mile to watch Mette's related videos. English name: Bi Li Bi Li, referred to as Bili Bili, is now a highly concentrated cultural community and video platform for young people in China.