According to the QQ music query, the original singers of Happy Everyday are Ying Liqin and Huang Yong. It is a song written by Ying Liqin and composed by Huang Yong, which expresses the composer's good hope for a happy life every day.
Some lyrics of "Happy Everyday": Yuanyang is dancing in the water and butterflies, and happy pictures are printed in your eyes, and happy singing troubles are put aside, and the good ones are left behind and the bad ones disappear.