When can a criminal suspect entrust a lawyer at the earliest?

The law clearly stipulates that a criminal suspect in a criminal case may entrust a lawyer to intervene in the case from the day when he is interrogated for the first time by the investigation organ or compulsory measures are taken.

Article 33 of the Criminal Procedure Law: A criminal suspect has the right to entrust a defender from the day when he is interrogated for the first time by the investigation organ or takes compulsory measures. During the investigation, only lawyers can be entrusted as defenders. The defendant has the right to entrust a defender at any time.