Legal analysis: Lawyers must bring a power of attorney signed by the client when meeting criminal suspects and defendants.
Legal basis: "Code of the People's Republic of China"
Article 919 An entrustment contract is a contract in which the principal and the trustee agree that the trustee will handle the principal's affairs.
Article 92 The trustee shall handle the entrusted affairs in accordance with the instructions of the principal. If it is necessary to change the principal's instructions, the principal's consent must be obtained; if it is difficult to contact the principal due to an emergency, the trustee shall properly handle the entrusted affairs, but shall report the situation to the principal in a timely manner afterwards.