Article 35 of the "Criminal Procedure Law of the People's Republic of China"
The defender's duty is to argue that the criminal suspect or defendant is innocent, Provide materials and opinions on mitigating crimes or reducing or exempting criminal liability, and safeguarding the procedural rights and other legitimate rights and interests of criminal suspects and defendants.
Article 36
Defense lawyers may provide legal assistance to criminal suspects during the investigation; represent them in appeals and accusations; apply for changes in compulsory measures; and learn about criminal suspects from the investigation agencies Provide opinions on the alleged crimes and relevant circumstances of the case.