Yes, but under certain conditions, according to Article 32 of the Measures for the Administration of Lawyers' Practice, a lawyer may not refuse to defend or represent him without justifiable reasons. However, if the entrusted matter is illegal, the client engages in illegal activities by using the services provided by the lawyer, or the client intentionally conceals important facts related to the case, the lawyer has the right to refuse to defend or represent him.
It can be seen that a lawyer can terminate the entrustment contract for just reasons, such as finding a conflict of interest, similar to the same lawyer representing the original defendant, or the client making an illegal request, or the entrustment contract stipulates that the contract can be terminated.