I have one of these in my area except it's for Vietnamese immigrants. And yep. It provides language classes, job help services, financial planning, childcare, housing services, help navigating the systems and services of my city, etc. Its completely normal and I know that it's one of the first stops for many immigrants and / or refugees as they get acquainted to a new place.
There's nothing secret about it. If anything it helps people assimilate into their neighborhood. Ridiculous that people think that somehow helping immigrants get comfortable with a new country is somehow a fucking evil plot.
These services are provided by police stations in China. Crackers thought if someone provided those services for chinese people outside of China, it must be the chinese police.