Before he won him over, he was Xiaobao, Baobao: so precious that Luo Ziyao was afraid he'd drop him if he held him, or melt if he put him in his mouth. He did whatever Luo Ziyao wanted, without question.
While chasing Luo Ziyao, he became Erbao, doing all sorts of stupid things.
After he won him over, he became Dabao SOD Honey, something Luo Ziyao rubbed on his face.
In public, Luo Ziyao was Young Master Luo. In private, Luo Ziyao really did become Young Master Luo.
Bai Yi: Who are you calling Young Master?
Luo Ziyao: No, you're my grandpa. Grandpa Bai!
He's Young Master Luo, and he's Grandpa Bai. He's always on top. Haven't you heard that a higher official can crush someone one rank below?