This is a season two and follows the love story of Xiao Fan and Bi Yao. While very short with only 18 episodes it is better then first season and story flows much better.
My only complaint is that Bi Yao shows up only in flashbacks and few minor scenes. At least all actors from season one are back.
While I hope they will show up in season 3, sadly, that is very unlikely as it's been two years and they all have other projects to work on.

Overall, if you liked the season one, you will like this one too. It was left on the cliffhanger though .