Costume Cdrama.
I can't remember much about it except the male lead was older, not a big height difference, quite neutral/"gentle"/effeminate-ish and elegant. There was some criticism about the actor being old/ not young idol.
The female lead "won" the male lead in an auction/ competition at a music house/brothel type place where both (!) men and women were all eager to bid for him. He had been travelling or elusive in some way but now wanted to settle down.
I think she was only looking for him for a quest or to answer something and wasn't intending to "win" a marriage/ pet in-house artist and didn't know what he looked like or that he was so popular/famous - I vaguely recall he flew down from a balcony to announce her the winner and the crowd was jealous and displeased.. Actually he chose her and he had some prior knowledge or ulterior motives . And she took him home.
That's all I can remember and I'm going crazy trying to recall anything else about it and Google thinks it is "Love Like the Galaxy" .