Overall, great production.
Acting
This series has proven to me that Zhao Lusi is a great actress. She can act like a wise swordswoman from "Who Rules the World" to a 15-year-old girl in "Love Like a Galaxy" Sometimes, I wonder why the female lead acted so rashly and even stupidly, then I have to remind myself she is only 15. Leo Wu plays the cold emotionless general very well. The supporting casts are all commendable as well.
Mood
The mood is well-set and constant throughout the series. Especially the lady's quarter chatters remind me of the 17 and 18th-century Western eras when the ladies and men are separated.
Style
The style is very down-to-earth and not overly exaggerated. The sets are done tastefully.
Music
I swear there were moments of the music reminded me of Downton Abby! I like the opening, just music, not loud singing like some other series.
Directing
Directing is not overly exaggerated. I even forgive the repetitive hugs in a few scenes.

Overall
I think the production value is excellent. The humor is not over the top. I enjoyed the slow pace cinematography. Although there were a few moments I wondered why they made certain decisions, I stuck with it. The ending scenes are too rushed and left some things unexplained. I heard the director had to cut many scenes and he will release a director's cut version. Can't wait for that to come out!