I started it yesterday and spent my whole day watching it from how invested I was and it was worth it.
It's a well done cdrama in every aspect. The plot is not obvious, you get invested in the investigation with the lead characters until discovering who did it, but then you have to discover why they did and it's painfully sad their story from my point of view.
As expected, Zhao Jinmai was an amazing actress, as well was Bai Jingting, they were wonderful in their roles and I feel really grateful to be able to watch such an amazing cdrama with these wonderful leads.
Talking about the female and male lead characters, they weren't stupid as hell, which is pleasureable, I have watched so many stories like this with stupid lead characters that it's amazing to have this one with them. They weren't magicians to solve everything and they needed help from the police, which as well wasn't a bunch of unreliable people.

The story is wonderful and you will have a good – with a much of angst – time watching it.