I saw a comment here which said "if he is a red flag then I'm blind" which brought me here to ask you folks

Is it the character or the actor that makes you like a red flag?

I don't think it would love morally ambiguous Nan Xu Yue (from the blossoming love) as much as I do if it was played by another actor except the men that I already really like. I think this is also why Cang Zhao from Moonlight Mystique hasn't bothered me much despite people finding him annoying. Li Tong Guang (also played by Chang Hua Sen) already prepared me to accept him with all his flaws and face card.