A contract is an agreement between the parties or both parties to establish, change or terminate a civil relationship. Contracts established according to law are protected by law. A contract in a broad sense refers to an agreement in all legal departments to determine the relationship between rights and obligations. Narrow contract refers to all civil contracts. The narrowest contract only refers to the creditor's rights contract in civil contract. Article 85 of General Principles of Civil Law of People's Republic of China (PRC): A contract is an agreement between the parties to establish, change and terminate a civil relationship. Contracts established according to law are protected by law. Article 2 of People's Republic of China (PRC) Contract Law: A contract is an agreement between natural persons, legal persons and other organizations with equal subjects to establish, change and terminate civil rights and obligations. Other laws shall apply to the agreements on identity relations such as marriage, adoption and guardianship.