Is the contract for the sale of small property houses invalid?

Legal analysis: effective. A contract concluded by a person without capacity for civil conduct is invalid, a contract concluded by false representation and concealment is invalid, a contract concluded in violation of mandatory provisions and public order and good customs is invalid, and a contract concluded in malicious collusion is invalid.

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

Article 146 of the General Principles of the Civil Law of People's Republic of China (PRC) * * * The civil juristic act carried out by the actor or the counterpart for 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 of the Civil Code of People's Republic of China (PRC) * * * A civil juristic act that violates the mandatory provisions of laws and administrative regulations is invalid. However, unless mandatory provisions do not invalidate civil legal acts. A civil legal act that violates public order and good customs is invalid.

Article 154 of the Civil Law of People's Republic of China (PRC) stipulates that 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.