Compendium of Materia Medica was originally written by Li Shizhen. It's also Jay Chou's song. But recently it refers to the background music played by Liu Genghong in live aerobic exercise.

Originally, it was just a simple rap, because BGM, which was used by Liu Genghong to broadcast shuttlecock exercises live, became a fatal divine comedy, and too many people followed Liu Genghong to broadcast fitness live, so when the prelude of Compendium of Materia Medica rang, it meant sweating like a dog.

The reason of Liu Genghong's sudden popularity.

Liu Genghong is all over the Internet, because he and his wife broadcast live fat-burning calisthenics on the Internet five days a week. Now there are a large number of followers called "Liu Genghong Girls", who not only do aerobics with 49-year-old Liu Genghong, but also expect Liu Genghong to "approve homework online".

Up to now, Liu Genghong Tik Tok fans have broken 1000 W, and gained 5 million fans a week, dominating Tik Tok, Weibo, Xiaohongshu and other social media. On April 19, 2 million netizens poured into the live broadcast room in Liu Genghong to punch in and do exercises. Even college students complained in Little Red Book that physical education class was watching Liu Genghong's video practice.