Candlelight in the Clouds, Looking Forward Is as Vague as Yesterday

Revenge + falling in love and killing each other + intrigues + palace fighting + early routines and later counter-routines + rebirth + the male protagonist's character is sincere and passionate in the early stage, then turns to black and white in the later stage + the female protagonist's character is simple and lively in the early stage, and becomes a big heroine in the later stage.