Take what comes to mind, and given that the author is a lazy terminal cancer patient and a patient with intermittent episodes of unimaginative syndrome, don't have any expectations. Maybe if you can't finish writing a unit, you have to play it first. Just take a look if you are not afraid of falling into a trap.
Ps: Since the author has watched these TV series himself (if he hasn't watched them yet, he will use the background to write blindly), and because the author's writing skills are incomparably poor, you may need to have some experience in watching TV series yourself.
Pps: I don't plan to have a CP for the time being, it will be determined later.
Ppps: Let's start with Long You Tian Xia. Actually, I haven't thought about the setting for the heroine at all... You Sang...