It is worth watching for the comedy and cute romance. Chemistry was great with the leads. Plus, no Face Tune blur of the faces that leave actors looking like they are wearing smeared masks. Imagine seeing a pimple, a few or chicken pox marks in a new Chinese drama! The actors look natural. Their makeup actually matched the skin tones which is rare to find these days!
Budget was low, but, it did not detract from the story or the comedy. You will notice the costumes are not custom made to each actor or may be a bit wrinkled from multiple uses. There are fewer extras, soldiers and court nobles. These do not detract from the entertainment value.

Story
The base story is the standard palace drama where power struggles and back hall machinations take place daily. The young emperor has to establish his leadership against the typical power hungry competitors. He is supported by a girl dressed as a eunuch. This is no earth shattering epic drama. The story is light hearted and very funny at times. There are enough dramatic episodes to add variation and closure. No frustrating cliff hangers in a drama that is half the length of typical dramas and succeeds in bringing the drama to a satisfying end.

Acting/Cast
I was pleasantly surprised the male lead was ruggedly handsome and not a typical idol. He played his character well. He was a good match for the female lead. They had very good chemistry. Their comedic timing was also good. The emperor was straight faced and stoic but isolated from the real world. The girl was bubbly and streetwise. Their interactions seemed natural. I would like to see these actors paired in a modern romantic comedy.
The supporting characters were good. They enhanced the entertainment value of the drama.

Music
The music is not bad at all. This is a rom-com and not a documentary or historical heavy drama. The popular music that is the introduction to every episode has a touch of rock. It shows up again when the king makes a big entrance. It was the first sign this drama is more comedy than drama and viewers should not take it too seriously. Most of these palace dramas get boring when they try too hard to be authentic and overly dramatic.

Rewatch
I would not rewatch from start to finish. But, I will definitely rewatch the cute parts between the leads and the funny parts of the supporting casts.