You can't. According to the relevant provisions of the Criminal Procedure Law, lawyers have the right to meet only in the investigation stage, and they can consult relevant files and materials in the relevant departments from the date when the case is transferred for review and prosecution.
Legal objectivity:
Article 33 of the Criminal Procedure Law of People's Republic of China (PRC) * * * A criminal suspect or defendant may entrust one or two persons as defenders in addition to exercising the right of defense by himself. 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. Article 40 of the Criminal Procedure Law of People's Republic of China (PRC) * * * Since the people's procuratorate examines and prosecutes the case, the defense lawyer may consult, extract and copy the case file. Other defenders may also consult, extract and copy the above materials with the permission of the people's court or the people's procuratorate.