They want to create a complex and interesting story but solution to the problems is not great and sometime absurd. They create great image of character in one scene but the character lost all his magic in next scene. Plot tried to be complex but in the end only insult audience intelligence. We can say that the writer of the story is a newbie.
The story focus on love but with very poor chemistry between lovers, acting is mediocre, directing is bad, you can feel hollow in the screenplay, full of unnecessary flashback, scene is overly done without strong meaning. The balance of the story is very bad because it focus very much on love until you almost vomit to see the character almost become a lunatic because of love.
If you still don't watch this, don't. If you don't mind the low intelligence of the story and just want to watch angelababy's beauty and want to kill time maybe you can enjoy this.