I really liked first two episodes where our leads interactions were really cute and the innocence flattering romance.
As the show goes on, the story line gets a bit boring and draggy. I finished the show just because I like Cheng Xiao.

The elder sister's maid was more despiteful than the main villain. Her character was so annoying. As an actress, applaud for her because she really did a great job portraying her character. Hope to see her in lead roles in the future.

I think the characters Yuan Qin, Xiao Yi and Si Kong are totally extra to the story and not much relation to the main story.

Overall, the show was quite easy to watch, although it could have been a lot better.