Yes According to nature. Suntech College in Shan Mei, Taiyuan has five certificates, which is a big red book. You can buy it with confidence. In the field of real estate, five certificates refer to construction land planning permit, construction project planning permit, building construction permit, state-owned land use permit and commercial housing pre-sale permit. These documents are important proof for developers to legally develop, sell and build in the real estate field. Dahongben refers to the "Property Ownership Certificate", which is a legal certificate to prove the ownership of the house. With the five certificates, developers can legally carry out housing construction and sales, and handle housing ownership certificates for buyers after completing housing sales.