There's a new policy now! #Apartment complexes restrict Chinese residents, #require proof of employment, #or proof of study; without these, you cannot move in. The landlord allows it, but the property management does not. That is to say, the rooms occupied by Chinese people. It is legal if there is no registration note for the stay. The property management might collaborate with the police, or corrupt officers, or the immigration department. They might report, arrest, and the landlord might also set a trap to cheat on rent. Or the landlord might report.