It’s already been two and a half days. The longer they go without catching him the less likely it will be that they do.
The fact that they are issuing a wider manhunt seems to back that up.
Given the publicity, I’m sure that they’ll catch a guy, but I’m skeptical that they’ll catch that guy.
Not to mention the CCTV Spring Festival Gala (https://en.m.wikipedia.org/wiki/CMG_New_Year's_Gala).
This isn’t even remotely close to the biggest.