In fact, the name "Haitang" is not Ding Yuxi's name, but a nickname given to him by Ding Yuxi's fans. The reason is because there is "Yu" in Ding Yuxi's name. Some fans thought of the movie "Big Fish and Begonia". Dayu and Big Fish have the same pronunciation, so fans called her "Haitang" so that they can be connected with their idol's name.