According to the Criminal Procedure Law of People's Republic of China (PRC):
Article 36 A defense lawyer may provide legal aid to a criminal suspect during investigation; Acting as an agent for complaints and accusations; Apply for changing compulsory measures; Ask the investigation organ about the crimes and cases suspected by the criminal suspect, and put forward opinions.
Article 38 From the date of examination and prosecution by the People's Procuratorate, defense lawyers may consult, extract and copy the case files. Other defenders may also consult, extract and copy the above materials with the permission of the people's court or the people's procuratorate.
As can be seen from the above provisions, the role of lawyers in the investigation stage is limited. They can meet, provide legal help and get to know the basic situation. But they can't read the newspaper. Only after the stage of examination and prosecution can lawyers read papers and files.