The marketization of China's real estate industry began with the housing reform in 1998. After the reform, domestic housing prices began to rise, and have been rising steadily since then, which brought the problem of high housing prices. Most residents are from mortgage to buy a house, and the current statistical ratio is 1: 9.

Buying a house by loan refers to the loan business in which the buyer applies for a loan from the bank to pay the house purchase price with the building traded as collateral, and then the buyer pays the principal and interest to the bank in installments, also known as house mortgage loan.