Are lawyers divided into first defense lawyers and second defense lawyers? Who is Mr. Deng's defense lawyer in the case of Zhang Koukou?

According to the provisions of the three major procedural laws, the entrusted lawyer is one or two, that is to say, at most two. In the defense of criminal cases, if two defenders are entrusted, there will generally be internal consultation and communication to determine their respective defense priorities (such as one attack and one defense) and cooperate with each other, so there will be no strict division between the first defense and the second defense.