Legal analysis: contracts that violate the mandatory provisions of laws and administrative regulations are invalid; A contract that violates the public interest is invalid; A contract that maliciously colludes to harm the interests of the state, the collective or three people is invalid; A contract that covers up an illegal purpose in a legal form is invalid; A contract that has no right to dispose of other people's property is invalid. But there are two exceptions: it is valid after ratification by the obligee; If the right of disposition is obtained afterwards, it will take effect.

Legal basis: Article 507 of the Civil Code of People's Republic of China (PRC). The ineffectiveness, invalidity, cancellation or termination of the contract shall not affect the validity of the relevant dispute settlement clauses in the contract. This clause shows that the dispute settlement clause in the contract is relatively independent and will not lose its effectiveness because the contract is invalid, revoked or terminated.