the title of a woman from Tiantai county, Taizhou city, Zhejiang province. "A sister in Tiantai" is a name for a woman from Tiantai County, Taizhou City, Zhejiang Province, who has attracted attention for sharing her daily life and clothes on the Internet. Her dress style is fashionable and simple, which is deeply loved and imitated by some netizens. Therefore, she was called "a sister on the rooftop" by netizens.