I've only seen 8 chinese movies (1 is a jackie chan, 6 are for my bias idol/actors, and 1 was just too weird) so it's new grounds for me, but this was beautiful!
the production, the directing and the camera work was top notch, though I'd have preferred prettier uniforms (thanks to kdramas love of pretty uniforms xD) but overall this had great quality.

there are a few plot moves I hate, and one is unnecessary angst/crazy characters that turn psychopathic. and this thankfully handled everything well.

Jackson Yi was only 18 when he pulled that off! he was amazing! his expressions, and the control over his movements was beautiful.. tbh even though I am an idol fangirl, I only heard of the name TFBOYS but I'd have been super prejudice if I read his bio before starting this. I only looked at his age and I was blown away by his acting.
also, I cried the most over the loss of that manbun ;p

Zhou Dong Yu on the other hand was 27! and she doesn't look a day older than 17 tbh, but she also had that control and maturity in her that actually gave extra depth to the character and her emotional control rather than making their age gap obvious or weird.

the development of the story was beautiful, granted it was a little too long so I had to pause every once in a while but that's just because I didn't want to look away while watching this. the vulnerability, the friendship, the connection was just beautiful~

I wanted a little more clarification on Xiao Bei's mom. they mentioned her again but I didn't get the point. did the cops previously meet Xiao Bei becasue he was searching for her? or did the cops know her?

anyway, I did think the cops were a little conveniently "dumb" and unable to talk or get their points across, but overall it was nicely wrapped up. though I slightly needed a little "more" of that ending :)

the songs were nice and I never rewatch movies, though I'll add this to my fav movies list, and maybe even the rare gems one too~