Legal basis: Article 39 of the Lawyers Law of People's Republic of China (PRC): A lawyer may not act as an agent for both parties in the same case, nor may he act as an agent for legal affairs that have conflicts of interest with himself or his close relatives. Article 51 of the Code of Conduct for Lawyers' Practice is under any of the following circumstances, the lawyer shall inform the client and voluntarily withdraw, unless the client agrees to act as his agent or continue to undertake it: (1) Accepting the entrustment of one party to a civil litigation or arbitration case, and other lawyers in the same firm are close relatives of the other party to the case; (2) Being a defender of a criminal suspect or defendant in a criminal case, and being a close relative of the victim in the case together with other lawyers; (three) the same law firm accepts litigation cases or other legal services entrusted by the other party who is not a party; (4) The law firm has a legal service relationship with the client, and the client has not asked the lawyer of the law firm to act as the agent of its litigation or arbitration case, but the lawyer of the law firm acts as the agent of the other party of the client; (five) within one year after the termination of the entrustment relationship, the lawyer accepts the entrustment of the other party who has an interest in the original client on the same legal matter; (6) Other situations similar to items (1) to (5) of this article can be judged according to the lawyer's practice experience and industry common sense. When a lawyer or law firm discovers the above situation, it shall inform the client of the fact of the conflict of interest and the possible consequences, and the client shall decide whether to establish or maintain the entrustment relationship. If the client decides to establish or maintain the entrustment relationship, it shall sign an informed consent form, indicating that the parties have been aware of the basic facts and possible legal consequences of the conflict of interest, and the parties explicitly agree to establish or maintain the entrustment relationship with the law firm and lawyers.