Legal analysis: If a contract is signed because of being cheated, you can first negotiate with the other party to terminate the contract or modify the contents of the contract to safeguard your legitimate rights and interests. If negotiation fails, a lawsuit can be brought to the people's court to claim that the contract is invalid on the premise that the contract can be proved invalid in the process of concluding the contract.

Legal basis: Article 144 of the Civil Law of People's Republic of China (PRC) stipulates that a civil juristic act carried out by a person without capacity for civil conduct is invalid.

Article 146 A civil juristic act by the actor and the counterpart with false intention is invalid. The validity of a concealed civil juristic act with false intention shall be handled in accordance with relevant laws and regulations.

Article 153 A civil juristic act that violates the mandatory provisions of laws and administrative regulations is invalid. A civil legal act that violates public order and good customs is invalid.

Article 154 A civil legal act in which the actor colludes with the counterpart in bad faith and damages the legitimate rights and interests of others is invalid.