1, experience. Tik Tok's round-faced sister got her real name, Cao Menglin. She has more than 20 years of experience in the fitness industry. She was invited by CCTV to be a fitness guest and served as a senior special coach of Adidas. She can explain to users how to lose weight correctly during the live broadcast and has rich experience.

2. Personality. Tik Tok's round-faced sister is cheerful and optimistic, and is loved by many netizens because of her humorous live language.