As the article briefly mentions, these sort of Chinese police outposts have been discovered in multiple countries. This issue was also in Dutch news one or two

As the article briefly mentions, these sort of Chinese police outposts have been discovered in multiple countries. This issue was also in Dutch news one or two years ago. Apparently China uses these outposts to police Chinese citizens (and maybe their descendants?) living abroad, with the goal of instilling loyalty towards China. The Chinese government may also pressure their family in China in order to coerce compliance. It's basically mafia tactics applied by a government in order to control people who have left the country.