That's interesting, but these seem like they are just a slightly more structured form of the ways in which the CCP has been known to keep track of their own nationals abroad for many years. Not only is there no evidence or reason to expect that they would interact with people who are not PRC nationals, they presumably don't have guns and certainly have no actual policing powers either. If these "Chinese police stations" were to dispatch someone to my door, I could just call the actual police to have them removed. Meanwhile, I doubt I could call the "Chinese police stations" to protect me from the police of the country I live in, if they were to act upon a friendly request from the US like the Swedes and British did with Assange or the New Zealanders did with Kim Dotcom.