As a person who has been bullied before, I give this a solid ten. It reopened the wound, however, it also gave me hope to be vulnerable. I guess that's what movies are for, to let people feel.
I've watched this a year ago, never knowing that I did not let it end at its very ending. And rewatching it, I noticed the huge difference in the emotions I've felt a year ago and this day. I was dejected towards the notion that Bei's dialogue "You protect the world, I'll protect you" happened. With that being said, I was so sad when Bei's protection had to mean him getting executed. But I was grateful that I'm able to share this movie with a friend and that I realized that I was latching onto the wrong ending. To be able to witness Bei's consistency with his feelings towards Chen Nian was heartwarming. This is where the statement "Risk it all or nothing at all" comes into being. The series of events have that touch of reality that pulls you in, to better relate to their situation whether you've been in their situation or not. When it was the nearing end there's a scene when an officer, if I'm not mistaken, is telling Zheng Yi (the detective that has encountered Chen Nian a lot of times in the movie) "Must you drag both of them down", I highly I agree with that. Already sensing what has happened and the reason behind it, you should be empathetic enough to give at least one of them a chance. I can't blame Zheng Yi though, as I was looking for a laudable ending.

I was lowkey happy that Chen Nian, did not let Bei face these things alone, instead, she received her fair share of punishment. Hence, reminding us that she still cared. She didn't feel the need to be untroubled and just move on with her life.

The ending, I should say is true to life. Perfection. Bei walking behind Chen Nian, and Chen Nian accompanying the little girl. It still elaborates Bei's dialogue "You protect the world, and I'll protect you". This is by far the best ending and the most meaningfully constructed film I've ever watched. Every scene holds a meaning. No scene should be missed.
The surge of emotions was what I expected but the mark it gave on me, even 'till this day shall remain a recognition to the superb performance of the writer, actors, director, and every cast and crew.