Legal analysis: invalid, illegal acts have no legal effect. One of the indispensable conditions of a valid contract is "the expression of will is true", that is, the contents of the offer or promise made by the parties to the contract in the whole process of concluding the contract are their independent expression of will and their true expression of will. In general, the will of the actor is always consistent with its external performance. However, due to some subjective or objective reasons, the two may not be consistent. For example, one party deliberately fabricates false information or conceals or covers up the truth, which will make the other party form a wrong understanding and conclude a contract; Another example is a contract concluded by one party using some urgent requirements of the other party to coerce or force it to accept some extremely unreasonable conditions in other ways, and so on. The contracts concluded under the above circumstances are not true, so they are not protected by law, so they are also invalid contracts.

Legal basis: People's Republic of China (PRC) Criminal Law.

Article 266 Whoever defrauds public or private property in a relatively large amount shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance, and shall also or solely be sentenced to fixed-term imprisonment of not less than three years but not more than 10 years, and shall also be sentenced to fixed-term imprisonment of not less than 10 years or life imprisonment, and shall also be fined or confiscated. Where there are other provisions in this Law, such provisions shall prevail.

Article 192 Whoever illegally raises funds by fraudulent means for the purpose of illegal possession shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years; if the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than seven years or life imprisonment and shall also be fined or confiscated.

If a unit commits the crime mentioned in the preceding paragraph, it shall be fined, and the directly responsible person in charge and other directly responsible personnel shall be punished in accordance with the provisions of the preceding paragraph.

Article 266 Whoever defrauds public or private property in a relatively large amount shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance, and shall also, or shall only, be fined; If the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years and shall also be fined; If the amount is especially huge or there are other especially serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than 10 years or life imprisonment, and shall also be fined or confiscated. Where there are other provisions in this Law, such provisions shall prevail.