GunfightEnd of the year
It's fictitious, and the background is probably similar to GSDPA (Global Sustainable Development Promotion Association) (a little further back).
Probably Cheng Yongzhe is the overlord of one party (?), And he is planning to steal a file of GSDSA (Global Special Defense and Security Association), and then GSDSA (Global Special Defense and Security Association) eliminates his forces.
Purpose: Cherish my brother