Most of us know we have to be registered at the local Cong An occupancy office, detailing all the occupants of an apartment.
A friend called me around 23.25H Sunday night and said two Cong An and an interpreter had rung his apartment bell incessantly awakening him. He answered the door barely dressed and they wanted in. He said he was sleeping.
Long story short, they wanted to see who was sleeping there.
Still later, my friend sent me an SMS saying two other apartments occupied by Foreigners had been rousted awake for the same reasons. One said come back in the morning and the other let one guy (of three) in.
The one who admitted them said all the man did was to check each room and ask the occupants names and check them against a list.
The apartments were on DAO TRI (Everrich Condo) and on PHU THUAN.