Because of studying hard. Quan Suyan is a famous Korean singer, and Quan Suyan is just her official name. What is her real name? Quan Suyan is a singer who likes China cuisine very much. In order to learn Chinese well, she studied Chinese hard every day and finally got A B grade in the Putonghua exam. At the same time, Quan Suyan recites a text every day, which makes her Chinese so good.