Hello, our country's law does not stipulate how many people a lawyer can meet, but according to our country's Criminal Procedure Law, criminal suspects and defendants can entrust up to two defenders at the same time. Therefore, the interview can be conducted by one lawyer alone or by two lawyers together. Some detention centers explicitly require two lawyers to meet with one lawyer, while other detention centers have no prohibitive regulations in this regard.
Relevant provisions:
Article 32 of the "Criminal Procedure Law": In addition to exercising their own right to defense, criminal suspects and defendants may entrust one or two people as defenders. Within the same period, a criminal suspect or defendant may entrust up to two defenders.