According to the Measures for the Administration of Lawyers' Service Fees, the way of litigation first and then payment is full-risk agency, which can pay all the litigation fees in the early stage for the parties. If the case is successful and the fee is charged again, you can seek the help of some legal aid agencies or public welfare legal service agencies, who may provide you with relevant services.
Lawyers can help clients understand the legal provisions and their rights and obligations by answering their questions and providing legal opinions and suggestions.