He was originally her heroic benefactor, the man she fell in love with at first sight, but accidentally became her twin sister's fiancé...
"Give up, Shen Ruolan, the feelings that shouldn't exist need to be kept in your heart. Just be your trainee."
"Give up? That doesn't exist! I have to fight for my own happiness. What's more, no matter how you hook up, that man loves me more. Hey, don't you think it's annoying?"