The specific address is the public security bureau where the holder's household registration is located. The public security bureau that issues the certificate behind your ID card (usually that). You can call 1 14 or 1 10 for the specific address, the latter is not recommended. If you really can't find it, ask the police uncle. They must know where their home is.
Remember to bring your personal ID card and household registration book, and go to the exit-entry office of the local public security organ to apply for a pass to and from Hong Kong and Macao.