Basically the drama is about the politics that happens between concubines in the palace. Concubines with high power will try to manipulate others for their selfish desires. We can make the story of drama in two parts
1. When Wei Ying Luo is a maid in the palace. Because of her smartness she evolves and becomes a close maid to the empress. When the empress died later she will become a concubine because of some situations
2. How she turns emperor attention towards her (I personally liked this part so much).
I like the way the drama has taken.
All characters made their best in acting and the drama is mainly about Wei Ying Luo

This drama is highly recommended for china drama lovers