15. In July, 2020, after careful investigation, Yulin Public Security Bureau successfully destroyed the criminal gangs involved in black and evil, headed by Yangjian District, Yulin City, Guangxi Province, and arrested suspects such as Yangjian District, Zhou Jianlin and Luo. After investigation, it has been found out that the criminal gangs involved in black and evil, led by Yangjian District, are suspected of causing trouble, extortion, illegal detention, fraud, false litigation, intentional injury, high-interest lending and other illegal and criminal cases.