Legal analysis: the signature of the agent must be authorized, such as a legal power of attorney (which needs my signature to confirm) or a legal power of attorney (such as the guardian of a minor), and sign my name. If there is no power of attorney, whose name is signed will have no effect.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 162 A civil juristic act carried out by an agent in the name of the principal within the scope of his agency authority is effective for the principal.

Article 163 Agency includes entrusted agency and legal agency. An entrusted agent shall exercise the power of agency as entrusted by the principal. A legal agent shall exercise his power of agency in accordance with the provisions of the law.

Article 164 An agent who fails to perform or fails to fully perform his duties, thus causing damage to the principal, shall bear civil liability. If the agent and the counterpart collude maliciously and damage the legitimate rights and interests of the principal, the agent and the counterpart shall bear joint liability.

Article 165 If the power of attorney is in written form, it shall specify the name of the agent, the matters to be represented, the authority and the time limit, and shall be signed or sealed by the principal.