Free of charge, but involving specific defense situations, you need to pay lawyer fees and entrust a lawyer to defend. A lawyer refers to a practitioner who has passed the legal professional qualification examination, obtained the lawyer's practice certificate according to law, accepted the entrustment or designation, and provided legal services to the parties. According to the nature of work, lawyers can be divided into full-time lawyers and part-time lawyers, according to the scope of business, lawyers can be divided into civil lawyers, criminal lawyers and administrative lawyers, according to the client and work status, lawyers can be divided into social lawyers, corporate lawyers and public lawyers. Lawyer's business is mainly divided into litigation business and non-litigation business.