You need to prepare a list of evidence, write clearly the contents of the evidence, prove the purpose, and prepare your opinions and relevant legal basis before appearing in court. Even if you can't afford a lawyer, you can find a lawyer to provide relevant legal guidance services.
Legal objectivity:
Article 32 of the Criminal Procedure Law: In addition to exercising the right of defense, a criminal suspect or defendant may entrust one or two persons as defenders. The following persons may be entrusted as defenders: (1) lawyers; (2) A person recommended by a people's organization or the unit to which the criminal suspect or defendant belongs; (3) Guardians, relatives and friends of criminal suspects and defendants. A person who has been sentenced to punishment according to law or deprived of or restricted personal freedom shall not act as a defender.