Who is the man disguised as in Happy Birthday?

Lin sui From beginning to end, there is only one protagonist in a happy story, Chu and Yu, and the male host is Yi Rong Lin Sui. The theme of a happy story is that a cowardly "evergreen" who put her life in the hands of others and didn't know how to fight for her own destiny has re-grown into a self-confident, capable and strong woman who takes control of her own life.