Who is grandma Zheng?

Zheng Yuqiao. In Tik Tok, Zheng Yuqiao, who learned about popular science parenting, was affectionately praised as an "intimate parenting expert" by her mothers. Tik Tok, a short video social software with musical creativity, was hatched by ByteDance. Grandma Zheng is a retired doctor. She has rich medical knowledge and experience.