The contract is invalid under any of the following circumstances according to the law:
（1） One party entered into a contract by means of fraud or coercion, thereby harming the interests of the State;
（2） Malicious collusion harms the interests of the state, the collective or a third party;
（3） Cover up illegal purpose in legal form;
（4） Damage to social and public interests;
（5） Violation of mandatory provisions of laws and administrative regulations.
[Legal Basis]
Article 143 of the Civil Code Civil legal acts that meet the following conditions are valid:
（1） The actor has corresponding civil capacity;
（2） True declaration of intention;
（3） It does not violate the mandatory provisions of laws and administrative regulations, and does not violate public order and good customs.
