According to CoinMeta, the Chongqing Municipal Commission of Housing and Urban-Rural Development, along with other departments, has jointly issued the "Implementation Opinions on the Implementation Measures," which mainly include six aspects of policy measures: strengthening the pre-sale management of commercial housing, orderly implementing the sale of completed housing, increasing financial support, enhancing supporting services, optimizing project approval processes, and strengthening the supervision of the real estate market. The "Implementation Opinions" propose the implementation of a deposit system for the sale of completed housing. Real estate development enterprises, after obtaining the construction permit for the building project, shall sign a deposit contract with homebuyers through the Yu Yue An Ju system, and legally collect a deposit that does not exceed 5% of the total house price. If the real estate development enterprise breaches the contract and fails to deliver the house on time, the homebuyer has the right to terminate the deposit contract and request the return of the deposit.