any Korean dramas or Chinese or Taiwanese about revenge.

 I don't watch revenge plots a lot, cuz I don't like them much, but here is a list of very good dramas that I have seen, with revenge plots:

Prosecutor Princess

The Innocent Man

Bad Guy

Lawless Attorney

Remember: War of the Son

The Bridal Mask

Cruel City

Empress Ki

Mad Dog

You're All Surrounded

The Guardians

I hope you like them.