Real estate refers to the sum of real estate and real estate, and refers to buildings and attachments on the land. (such as houses, buildings, schools). "Primary market": that is, the land market, controlled by the land department, refers to the market where the state land management department transfers the land use right to real estate developers or other land users in the form of land use contracts within a certain period of time, for a specific purpose and at a specific price.

"Secondary market" refers to the market where real estate developers transfer completed houses and corresponding land use rights to units or individuals according to the requirements of land use contracts.

"Tertiary market" refers to the market where real estate property rights are transferred, mortgaged and leased between units and individuals, and it is the market where real estate transactions are transferred for the second time or more on the basis of the secondary market.

According to the nature of real estate, it can be divided into the following categories:

A. Commercial house B, non-commercial house C, fund-raising house D, welfare house E and private house

According to the use of real estate, it can be divided into the following categories:

Office building 1, standard office building 2, commercial and residential office building

[Residential] 1, high-rise residence (small high-rise) 2, multi-storey residence

[Shop] 1, shops on the second floor facing the street, and shops on the podium

[Industry] 1, production workshop 2, industrial office area

"Education" 1, schools, training institutions 2, educational land, other educational places