The effectiveness of signing a contract by proxy requires that the parties to the contract must have the ability to sign, the contract must have consideration or consideration, the content of the contract must be legal, the contract must conform to the form prescribed by law, and the expression of will of the parties to the contract must be voluntary and true, so as to meet the above five points.

legal ground

Article 143 of the Civil Code of People's Republic of China (PRC)

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 146

A civil juristic act in which the actor and the counterpart have false meanings is invalid.

Article 153

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

A civil legal act in which the actor and the counterpart collude maliciously and harm the legitimate rights and interests of others is invalid.