Legal basis: People's Republic of China (PRC) Lawyers Law.
Article 30 A lawyer representing litigation legal affairs or non-litigation legal affairs shall safeguard the legitimate rights and interests of clients within the scope of entrustment.
Article 31 When acting as a defender, a lawyer shall, according to facts and laws, put forward materials and opinions on acquittal, lighter punishment or reduction or exemption of criminal responsibility of criminal suspects and defendants, so as to protect the litigation rights and other legitimate rights and interests of criminal suspects and defendants.