I'm surprised that no one recommends The Double for Zang Hai. If you're curious on why I recommend this, here's why:
-both have smart leads (ML in Zang Hai and FL in The Double, well to be fair, their counterparts are also smart)
-their counterparts help them out whenever they need help
-good chemistry between the leads for both dramas
-most importantly, both focus on revenge (if you think they'll go soft when there's a romance tag, let me tell you: you're wrong!!!)
-both have smart leads (ML in Zang Hai and FL in The Double, well to be fair, their counterparts are also smart)
-their counterparts help them out whenever they need help
-good chemistry between the leads for both dramas
-most importantly, both focus on revenge (if you think they'll go soft when there's a romance tag, let me tell you: you're wrong!!!)