Legal analysis: Yes. According to Article 35 of the Lawyers Law, an entrusted lawyer may apply to the People's Procuratorate or the People's Court to search and obtain evidence, or apply to the People's Court to notify witnesses to appear in court to testify based on the needs of handling the case. If a lawyer investigates and collects evidence on his own, he may investigate the situation related to the legal affairs undertaken by the relevant unit or individual with the lawyer's practicing certificate and law firm certificate.
Legal basis: "Article 35 of the Chinese People's Attorney and Lawyers Law" stipulates that the entrusted lawyer may 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 based on the needs of the case. Appear in court to testify.
If a lawyer conducts his own investigation and evidence collection, he may apply to the relevant unit or individual under investigation to handle legal affairs with his lawyer's practicing certificate and law firm certificate.