Heya :)
I loved Princess Agents, Legend of Lu Zhen, and Lost Love in Times...you should watch Legend of Lu Zhen first. I am currently watching Grand Prince (at ep 5 now) and it's amazing so far.
Song of Phoenix was not so good (romance sucked) The King loves was getting very slow and boring after 6 episodes. Secrets of 3 Kingdoms boring as well (95% political)
Here are some of my favs, I don't know if you have seen these? The Virtuous Queen of Han, General and I, The Legend of Dugu, Cinderella Chef, Princess of Lanling King, Prince of Lan Ling, Scarlet Heart, Scarlet Heart Ryeo, Chronicle of Life, The Kings Woman, Ten Miles of Peach Blossoms, Legend of Yun Xi, Legend of Fuyao, Ruyi's Royal love in the Palace, The Empress of China, The Eternal Love, Oh! My emperor, Chinese Hero Zhao Zi Long, Empress Ki, Rule the World, The Imperial Doctress, The Princess Weiyoung, Introduction of the Princess, The Journey of Flower, Deep in the realm of conscience.