Hangzhou second-hand housing agency needs to sell ID cards. Is the real estate license reasonable?

Second-hand housing agents in Hangzhou need to sell ID cards, and the real estate license is reasonable. This is not a direct transaction between buyers and sellers, but a transaction through a third-party intermediary. When a real estate brokerage institution signs a contract for the sale of housing brokerage services with the client, it shall examine the client's identity certificate and other relevant materials. When signing a real estate brokerage service contract with a real estate brokerage agency, the client shall provide the real and valid identity certificate to the real estate brokerage agency. Commissioned to sell or rent a house, it should also provide a real and effective certificate of ownership of the house to the real estate agency. If the client fails to provide the required information or the information provided is inconsistent with the actual situation, the real estate brokerage institution shall refuse to accept the entrustment.