Legal basis: Civil Code of People's Republic of China (PRC).
Article 214 The establishment, alteration, transfer and extinction of the real right of immovable property, which should be registered according to law, shall take effect when it is recorded in the register of immovable property.
Article 215 A contract concluded between the parties on the establishment, alteration, transfer and extinction of the real right of immovable property shall become effective upon the establishment of the contract, unless it is otherwise provided by law or agreed by the parties. Failure to register the real right shall not affect the validity of the contract.