(2) Entrust a lawyer as an agent to represent the lawsuit. Whether it is a civil case, an economic case, an administrative case or an application for execution, the parties may entrust a lawyer as an agent to participate in the litigation instead of themselves. Lawyers act within the prescribed agency authority and agency period. (3) The private prosecutor of a criminal private prosecution case, the victim of a public prosecution case and their close relatives may entrust a lawyer as an agent to participate in the proceedings. (4) The defendant in a criminal case or his close relatives or guardians may hire a lawyer to defend in court. Sometimes, according to the needs of judicial work, the people's court may also appoint a lawyer to defend the defendant. (5) The parties to a non-litigation event may ask a lawyer to provide legal aid or represent them in mediation or arbitration activities. "Non-litigation events" mainly include: 1. There is no dispute and no litigation is needed. For example, as the executor of a citizen's will; Make a will for citizens and assist in notarization procedures. Disputes may occur or have occurred, but they can be settled through mediation between individuals, organs, groups, enterprises and institutions without litigation. For some disputes, lawyers, as agents, directly help solve them, without the need for third-party mediation. Disputes between organs, organizations, enterprises and institutions that have not been brought to court or settled through mediation or arbitration. Such as some economic contract disputes. 5. Foreign-related non-litigation events. Such as maritime affairs, foreign trade and joint venture arbitration.