Seriously speaking, these are criminal organizations that threaten the personal safety of Chinese citizens. The markings have been there for a long time, and they are marked precisely because they are criminal organizations.

If you are aware of the telecom scams originating from Southeast Asia and targeting people worldwide, this should not be unfamiliar to you. If not, take the time to google it. China, together with Southeast Asian countries, is cracking down on them.

If you have ulterior motives, I'm ready.