Is it necessary to hire a defense lawyer in a public prosecution case?

Article 25 of the Legal Aid Law stipulates that "if a criminal suspect or defendant in a criminal case falls into one of the following circumstances and does not entrust a defender, the people's court, the people's procuratorate and the public security organ shall notify the legal aid institution to appoint a lawyer as a defender: (1) Minors; (2) Persons with vision, hearing and speech disabilities; (3) Adults who can't fully recognize their behavior; (4) Persons who may be sentenced to life imprisonment or death; (5) Defendants in death penalty review cases who apply for legal aid; (6) The defendant tried in absentia; (seven) other personnel as prescribed by laws and regulations. In other criminal cases that are tried by ordinary procedures, if the defendant fails to entrust a defender, the people's court may notify the legal aid institution to appoint a lawyer as a defender. " Article 31 stipulates that "Article 31 If a party to the following matters fails to appoint an agent due to financial difficulties, he may apply to a legal aid institution for legal aid: (1) to request state compensation according to law; (2) Requesting social insurance benefits or social assistance; (3) Requesting a pension; (4) Requesting to pay alimony, alimony and alimony; (5) Requesting confirmation of labor relations or payment of labor remuneration; (6) Requesting a citizen to have no or limited capacity for civil conduct; (seven) claims for compensation for personal injury caused by industrial accidents, traffic accidents, food and drug safety accidents and medical accidents; (eight) to claim compensation for environmental pollution and ecological damage; (9) Other circumstances stipulated by laws, regulations and rules. "