Historical chinese drama with a villian female main character or a villian couple

Looking for a Historical chinese drama with a villian main character similar to Shangguan Qian from My Journey to You. 

Villain couple where both parties do some morally questionable things: 

• Dong Lan Xue (love this murderous power couple)
• Rising Feather
• Circle of Love
• The Killer Is Also Romantic (more light-hearted but they are both morally grey)

Female villain (I'm defining this as morally grey - an assassin, a killer, someone who's out for themselves and ruthless)

• Seal of Love (demon queen)
• The Legends (demon queen)
• Scent of Love (demon queen)
• The Starry Love (one of the FLs is vengeful and wants to be demon queen)
• Miss Mystery (vengeful, cunning)
• Hold On, My Lady (bandit - but this one is pretty light)
• Wolf Princess (ish... she has a violent alternate personality)
• +1 Fortune Writer & Night of Love With You (in these two the FLs are actual villain archetypes in a fictional universe)