I’ve found on Viki a few Chinese historical dramas that seem fairly well-written, although there are occasional gaping plot holes. The King’s Woman, Flame’s Daughter and Legend of Fuyao (kind of a Harry Potter ripoff in part, but involving Chinese-style palace intrigues in a fantasy setting) were all fairly diverting. The women were gorgeous, if your taste run towards Orientals, the costumes looked expensive and the sets were pretty substantial. I have no idea how accurate the subtitles were, but they were sufficient for me to follow the story lines. If Wikipedia’s historical entries are accurate, in at least one instance, the intrigues were true to history.
Try Nirvana In Fire. Viki has it. A guy seeks justice for a conspiracy that labeled his family as traitors 12 years prior.