If a lawyer investigates and collects evidence by himself, he may, with the lawyer's practice certificate and the certificate of the law firm, investigate the situation related to undertaking legal affairs with the relevant units or individuals. The entrusted lawyer may, according to the needs of the case, apply to the people's procuratorate or the people's court to collect and obtain evidence or apply to the people's court to notify witnesses to testify in court.
Legal objectivity:
Interpretation of the Supreme People's Court and the Supreme People's Procuratorate on Several Issues Concerning the Application of Laws in Handling Criminal Cases of Infringement on Citizens' Personal Information Article 1 "Personal information of citizens" refers to all kinds of information recorded by electronic or other means that can identify the identity of a specific natural person or reflect the activities of a specific natural person, including name, ID number, communication contact information, address, account password, property status, whereabouts and so on.