The conditions for the establishment of the contract are:

1. Both parties to the contract have corresponding civil capacity;

2. The intentions of both parties are true, and there is no fraud, coercion, taking advantage of others' danger, obviously unfair or major misunderstanding;

3, the content and form of the contract does not violate the mandatory provisions of laws and administrative regulations, and does not violate public order and good customs.

Invalid contract:

1, the parties to a contract have no ability to conclude a contract;

2. Please be aware that the contract violates laws and regulations;

3. The contract violates public order and good customs;

4. The expression of intention of the contract is false;

5. The parties collude maliciously and harm the legitimate rights and interests of others.

To sum up, expressing the validity of hidden civil juristic acts with false intentions should be handled in accordance with relevant laws and regulations. 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.

Legal basis:

Article 44 of the Civil Code of People's Republic of China (PRC)

A legally established contract shall take effect upon its establishment. Where laws and administrative regulations stipulate that examination and approval, registration and other procedures shall be handled, such provisions shall prevail.

Article 45

The parties may agree to attach conditions to the validity of the contract. A contract with effective conditions shall take effect when the conditions are met. A contract with termination conditions is invalid when the conditions are met. If the parties improperly prevent the achievement of conditions for their own interests, the conditions shall be deemed to have been achieved; Those who improperly contribute to conditional achievement are regarded as conditional failure.

Article 143

A civil juristic act that meets the following conditions is valid:

(1) The actor has corresponding capacity for civil conduct;

(2) the meaning is true;

(three) does not violate the mandatory provisions of laws and administrative regulations, and does not violate public order and good customs.

Article 145

A civil juristic act that restricts a person's capacity for civil conduct to obtain pure benefits or a civil juristic act that is appropriate to his age, intelligence and mental health is valid; Other civil juristic acts shall take effect with the consent or ratification of the legal representative.

The other party may urge the legal representative to ratify it within 30 days from the date of receiving the notice. If the legal representative fails to express it, it shall be deemed as refusal to ratify it. Before a civil juristic act is ratified, the bona fide counterpart has the right to revoke it. Revocation shall be made by notice.