Can I ask for evidence when I am detained?

No, the detained person and his family or friends are not allowed to see it. Only lawyers can read the files and materials related to the case. After the criminal suspect is detained in criminal detention, the lawyer has the right to meet the criminal suspect, and the lawyer can also consult the case file. If a defense lawyer holds a lawyer's practice certificate, a law firm's certificate, a power of attorney or a letter of legal aid to ask for a meeting with the criminal suspect or defendant in custody, the detention center shall arrange the meeting in time, which shall not exceed 48 hours at the latest.