Natural persons under the age of 18 are minors. Whether the contract signed by the minor is valid, the age group should be separated, whether the main living income is based on their own labor income, whether the age, intelligence and transaction are "compatible" and other factors, and the main purpose is to protect the legitimate rights and interests of the minor.
First of all, 16 years old is the legal working age. Minors between the ages of 16 and 18 who rely on their own labor income as their main livelihood** are to be regarded as persons with full capacity for civil conduct. That is, the signed contract is valid.
Secondly, minors between the ages of 8 and 16, as well as minors between the ages of 16 and 18 who do not rely on their own labor income as their main livelihood, are persons with limited capacity for civil conduct, and the validity of the contracts signed by them is to be determined. Its implementation of civil juristic acts shall be valid if it is carried out by its legal **person ** or with the consent and recognition of its statutory ** person, otherwise it is invalid. This means that the counterparty must obtain the approval of its legal person before or after the fact. The counterpart may urge the statutory ** person to make a retrospective recognition within one month. If the statutory ** person does not make an expression, it shall be deemed to be a refusal to recognize. Before the contract is recognized, the bona fide counterparty has the right to revoke it. The revocation shall be made by way of notification. However, if a civil juristic act that is purely beneficial or suitable for its age and intelligence can be carried out independently, it is not necessary to obtain the approval of its legal person in advance or after the fact. With such a provision that the validity of the contract is to be determined, a contract in which the minor "purely obtains benefits" may be directly found to be valid;A contract that is "compatible" to the minor's age and intelligence will not cause damage to the minor's legitimate rights and interests, and in order to promote the transaction, protect the security of the transaction, and fairly protect the counterparty, it is not necessary to be found invalid, but can be found to be valid. What does it mean to "adapt"?The criterion is on a case-by-case basis, taking into account factors such as the subject matter of the transaction, the amount, the minor's cognitive level, the market, etc.
Clause. 3. Minors under the age of 8 are persons with no capacity for civil conduct, and their legally-prescribed persons are to carry out civil juristic acts. That is, the contract signed by a minor under the age of 8 is invalid.