We were given 5 copies of a form and still dont know what the fifth one is for. We did ask for it to be stamped anyway just in case but they refused.I am sure the chinese dont give you an extra copy in case of mistakes. We did get a lift back to the village to get exrtra stuff yesterday, my thinking it would take all week, but it ended abruptly just before PSB closed. Now we are stuck with a heavy suitcase. I dont know whether to return to village to regroup or stay. The village police told us yesterday that if we had done rp through them we would even have to get permission whenever we wanted to leave the village. Jesus!

My guess is that the fifth copy is for presentation to a police station in the event of you flitting to a location outwith the control of the police station you are currently tied to, within the 180 day validity of your RP. Or if you don't flit, that copy to be completed by your current police atation before you venture to the big city to renew your RP. So, you can save yourself a return trip to the PSB in order to obtain an accommodation form.
The extra copy they gave you is to be used in the future. The PSB have done you a favor in that respect!