In some places, only one certificate, one ticket, real estate license and deed tax ticket are needed.
Some places require two certificates and one vote, real estate license, land certificate and deed tax ticket.
Three certificates and one relocation refer to non-commercial housing, real estate license, land certificate, real estate definition card (the certificate issued by the unit is the certificate of purchasing a house at cost price or preferential price, in small black letters) or a piece of paper (the original purchase agreement).
That's about it.