According to Article 33 of the "Law of the People's Republic of China on Lawyers and Lawyers of the People's Republic of China"
From the date when a criminal suspect is interrogated for the first time or compulsory measures are taken by the investigative agency, The entrusted lawyer has the right to meet with the criminal suspect or defendant and learn about the case with his lawyer's practicing certificate, law firm certificate and power of attorney or official legal aid letter. Lawyers' meetings with criminal suspects and defendants are not subject to surveillance.
Article 34 The entrusted lawyer has the right to inspect, excerpt, and copy the litigation documents and case file materials related to the case starting from the date of review and prosecution of the case. The entrusted lawyer has the right to inspect, extract, and copy all materials related to the case from the date the case is accepted by the People's Court.
Extended information:
Legal effect of copies
1. Photocopies can be used as evidence, but if the other party raises objections, they cannot be used as direct evidence. .
2. Article 68 of the "Civil Procedure Law" stipulates: Evidence refers to documentary evidence that can prove the objective facts of a case and must be verified to be true. It shall not be used as a basis for determining facts in litigation. The original must be submitted. There is no other material to confirm it.
3. The Supreme People's Court clearly stipulated in the "Opinions on Several Issues Concerning the Adaptation to the "People's Republic of China and the National Civil Procedure Law": The evidentiary materials submitted in civil litigation are copies of the originals.
Baidu Encyclopedia: "The People's Republic of China and the National Lawyers Law"