The incident was caused by a "most magical and effective" weight loss mantra: "Bang-Ma-Li-Ma-Li-Bai-Bang" which was madly transmitted by many netizens on the Internet. This weight-loss mantra is caused by the song "Magic Weight-loss mantra". According to netizens, Zhang, the singer who sang this song, lost 20 Jin in a month, which also triggered the crazy pursuit on the Internet. However, whether it really has the function of "making people thin" has been hotly debated by netizens and health experts.