I finished this drama in less than a week, and surprisingly, I'm liking it very much. Personally, I like a character driven story more than a plot ones, and this drama is the one for me.

Reasons why I liked it that much:
1. Every character is uniquely designed and shines by their own. No character is a block wood.
2. Ju Jingyi is a perfect cast. Usually, Chinese actress' features are too feminine so their portrayal of girl-boy disguise are not convincing at all, but Ju Jingyi's a good one. When she's a girl, she has this ethereal, fairy-like look, and when she's a boy, she has this boyish, innocent and mischievous look. Her mannerism changes.
3. I like otome game, and this drama looks a lot like one.
4. This has the nostalgic feeling of a youth school drama, and the regal, dramatic flair of a historical piece, shown in balance.
5. It's not ambitious, but executed perfectly. They will keep you on your seat, but not scared or anticipating your favorite character suddenly killed or anything.
6. The cinematography is so beautiful!! Pretty scenery shots, pretty color palette, I really want to go to Yunshang and live there...
7. Young love, school primadonnas, wise teacher and parents being parents.
8. Do remember they are young adults, so the story, although has a bit of mystery, is not so complex and heavy.
9. Plot twist that I didn't ask but thankful for
10. The sound effect!!

It will be a nice drama to watch if you just want to stop thinking, sit down and rewind, or reminiscence the good old times.