The movie got so invested into its weakly conceived plot thread, that it forgot to give the audience anything to care about. Much is happening but you may find it hard to apply any interest, due to the absence of any persons to root for or be worried about.
The wannabe-charismatic antagonist is too evil. The protagonist is the blandest piece of dry bread you could try to imagine. No one else is established long enough to grant you the strength to even raise an eyebrow at.
Daniel Wu, as the antagonist, could have done a better job, I believe. I've seen him act well in other movies. Sadly, the director is quickly revealed as tone-deaf and has, I assume, never cared to repeat any of the scenes for a better take. Wu has still done at least remotely okay enough...but his charisma gets doused by lack of efficient direction or script. The story attempts to give his character depth, but apparently forgets that his actions weigh more than his scrawny sub-plot.
Qianyuan Wang got the worst deal out of it, though. It's possible to see what type of cop he's trying to portray, yet he's never given a moment to be anything but the worst trope of 100+ years of character writing for crime movies. No character development, no personality to describe with more than a few words and no reasonable establishment of his motivation.
The last fight had me at least mildly entertained, short as it was. What finally managed to raise my eyebrows, though, was the very end, revealing the fate of one of the characters. It's a somewhat shocking statement on Chinese government. At least that how I read it.
