Legal basis: Article 36 of the "Criminal Procedure Law of the People's Republic of China" states that legal aid agencies can station lawyers on duty in people's courts, detention centers and other places. If the criminal suspect or defendant has not appointed a defender or the legal aid agency has not appointed a lawyer to defend him or her, the duty lawyer will provide the criminal suspect or defendant with legal advice, procedural selection suggestions, application for changes in compulsory measures, case handling suggestions and other legal assistance. People's courts, people's procuratorates, and detention centers should inform criminal suspects and defendants of their right to meet with duty lawyers, and provide convenience for criminal suspects and defendants to meet with duty lawyers.