This gets a perfect ten. It's honestly brilliant from beginning to end - it's a twisty roller coaster of emotion and thrill. I was kept on the absolute end of my seat the entire time, and I couldn't get to the next episodes fast enough to satisfy my need to know what would happen next.
While the main characters were 100% pitch perfect in their roles, every character, whether large or small, inhabited their roles like they were made for them. For example, Liu Dan is flat out brilliant here.

This drama is going in my top ten list.