legal ground
Article 161st of the Civil Code of People's Republic of China (PRC)
A civil subject may carry out a civil juristic act through an agent.
In accordance with the provisions of the law, the agreement of the parties or the nature of civil legal acts, civil legal acts that should be implemented by themselves shall not be represented.
Article 162
A civil juristic act carried out by an agent in the name of the principal within the scope of agency authority is effective for the principal.
Article 163
Agents include entrusted agents and legal agents.
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.