Legend of Concubine Zhen Huan the number of episodes could scare, but it's the best C-Drama that I've ever seen. It's a Palace drama like Yanxi and bot of them have a strong powerful female lead.
Battle of Changsha if you like it TSOML you must watch this, the producers are the same and the stories gave you the same "feeling". The focus is the family and the love story build up slowly and steady in both dramas.