Mr. Chai has worked for eight years in the procuratorate of a city in the Pearl River Delta and the procuratorate of a provincial capital city in the Northeast, five years in  the law enforcement supervision office of a provincial political and legal committee in the Northeast. He was responsible for coordinating major cases and participated in the "430" people's congress bribery case led by the Central Commission for Discipline Inspection as an absolute force. Many major influential cases were handled before resignation and after practice, with good social and legal effects; With many years of working experience in the political and legal organs, he has a good understanding of the case operation process and the thinking mode of the case-handling organs, and is good at helping the parties to analyze the current situation and make correct judgments at critical moments. He has successfully defended a number of corporate leaders (senior executives) and government officials as the chief defense lawyer, including the case of fraud in raising funds by the legal representative of an American otcbb listed company in Heilongjiang Province,fraud case of a deputy to the People's Congress of Liaoning Province,the legal representative of a listed company in Dongguan, Guangdong, illegally absorbed public deposits and so on. There have been successful cases of recovering huge economic losses for enterprises as legal advisers to large civil and commercial enterprises and agents of litigation-related disputes: for example, the Supreme People's Court fought back nearly 100 million yuan in an appeal case of a group company; They are highly praised by customers.