First of all, according to the provisions of Article 33 of the Lawyers Law, lawyers who act as defenders have the right to meet criminal suspects and defendants who are detained or under residential surveillance with lawyer's practice certificate, law firm certificate, power of attorney or legal aid power of attorney in accordance with the provisions of the Criminal Procedure Law. Defense lawyers are not monitored when meeting with criminal suspects and defendants.
Secondly, as far as this issue is concerned, whether the lawyer can meet on Sunday during the prisoner's detention needs to be decided according to the progress of the case, and there is no detailed regulation.