There is no legal standard for lawyer's contingency fees. The parties can negotiate with the lawyer to adopt piece-rate fees, fees based on the target amount, hourly fees, etc. However, my country's "Measures for the Administration of Lawyer Fees" stipulates that contingency fees are prohibited in criminal litigation cases, administrative litigation cases, state compensation cases, and group litigation cases.
Legal objectivity:
Article 13 of the "Measures for the Administration of Lawyer Service Fees" implements contingency agency fees, the law firm shall sign a contingency agency fee contract with the client, agreeing that both parties The risk responsibilities that should be borne, the charging method, the amount or proportion of charging. The maximum contingency fee shall not be higher than 30% of the target amount agreed in the fee contract.