epic wish fulfilment chinese/korean/TW dramas

so give me as many recommendations as possible of chinese/korean dramas which contain

- banging intense cuttroat love triangle (2 guys 1 fl)

- preferably reverse harem( more than 2 men fawning over her)

- obsessive/ possessive/ yandere  male leads

- strong meticulous smart female lead

if there's any dramas which fulfil all these ideals then it'd be perfect for me but it can contain even one of the following criteria's, please make the list long af so that i'd be busy for a month.

preferably historic but i'd be okay with modern too. It can be  any type of drama ( TW/chinese/korean), except thai lakorns.

NO THAI LAKORNS 

THANKS A TON

Great recommendations above. Also check 

Scarlet heart

The Discovery of romance

I need romance 2

What happened in Bali 

Que Sera Sera

Before we get married 

They all have cutthroat love triangles, possessive guys, reverse haram and the female leads are passably smartish  

@gacha thankss a lot , i'll add them

@gatcha lmao that seems ideal, imma check it out 

let's keep each other posted whenever we find a new drama that fits these ideals lol :)