Legal analysis: lawyers have the right to investigate and collect evidence. According to the needs of the case, entrusted by the parties, lawyers may apply to the people's procuratorate or the people's court for collecting and obtaining evidence or for notifying witnesses to ask questions and testify. In addition, lawyers can also investigate and collect evidence by themselves, and investigate relevant units and individuals with the lawyer's professional certificate and the certificate of the law firm. Therefore, if the defendant's relevant information has a significant impact on the nature and outcome of the case, then the lawyer has the right to obtain the defendant's relevant information through application or self-investigation and evidence collection.
Legal basis: Article 35 of the Lawyers Law of People's Republic of China (PRC). According to the needs of the case, the entrusted lawyer may apply to the people's procuratorate or the people's court for collecting and obtaining evidence or to the people's court for notifying witnesses to testify in court. 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.