Legal basis: Civil Code of People's Republic of China (PRC).
Article 118 A civil subject enjoys creditor's rights according to law. Creditor's right is the right of obligee to request a specific debtor to perform or not to perform an act based on contract, tort, negotiorum gestio, unjust enrichment and other provisions of the law.
Article 119 A legally established contract is legally binding on the parties.
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.