Legal basis: Article 65 of the Civil Procedure Law of People's Republic of China (PRC), the agency of civil juristic acts can be in written form or oral form. If the law requires it to be in writing, it shall be in writing. The written power of attorney for entrusted agency shall specify the name, agency matters, authority and time limit of the agent, and shall be signed or sealed by the principal. If the power of attorney is unclear, the client shall bear civil liability to the third party, and the agent shall bear joint liability.