Dramas where they overthrow the evil emperor

Most of the Cdramas I have seen have either good or at least strategic/pragmatic emperors, so I ask, are there any dramas where the emperor is straight-up evil and the story is about overthrowing the emperor? I doubt they established democracy afterwards, so how did they deal with the new regime? Specifically in historical/wuxia dramas.

Shows I have watched: Story of Kunning Palace, Love of Nirvana, My Journey to You, Fox Spirit Matchmaker: Red Moon Pact.