Article 37 of the "Criminal Procedure Law" The defender's responsibility is to determine whether the criminal suspect or defendant is innocent, the crime is minor, or the criminal liability is reduced or exempted based on the facts and the law. Submit materials and opinions to safeguard the litigation rights and other legitimate rights and interests of criminal suspects and defendants. Article 33: In addition to exercising their right to defense, criminal suspects and defendants may also entrust one or two people as defenders. The following persons may be entrusted as defenders: (1) Lawyers; (2) People recommended by people's organizations or the unit where the criminal suspect or defendant works; (3) Guardians, relatives and friends of the criminal suspect or defendant. Persons who have been sentenced to a penalty or deprived or restricted of personal freedom in accordance with the law may not serve as defenders. Persons who have been dismissed from public office or whose practicing certificates as lawyers or notaries have been revoked may not serve as defenders, except for guardians or close relatives of criminal suspects or defendants.