According to QQ music query, the original singer of Happy Everyday is Huang Yong. This is a song written by Li Qin and composed by Huang Yong, which expresses the composer's good hope for a happy life every day.

Some lyrics of "Happy Everyday": Yuanyang dances in the butterfly, happy pictures are printed in the eyes, happy singing troubles are put aside, the good ones stay, and the bad ones disappear.