Wu said that according to the official WeChat account of Southwest University of Political Science and Law, on June 3, at the "Investigation, Prosecution and Evidence Fixation of Crimes Involving Virtual Currency" seminar hosted by Southwest University of Political Science and Law, Sun Yuchen, senior consultant of Shanghai Xizheng Law Firm and founder of TRON, Li Tao, prosecutor of the People's Procuratorate of Haidian District, Beijing, Wang Dong, deputy director of the Eighth Procuratorial Department of the People's Procuratorate of Chaoyang District, Beijing, Xie Ling, deputy dean of the School of Criminal Investigation of Southwest University of Political Science and Law, Jiang Jiayun, deputy director of the First Criminal Court of the Chongqing Higher People's Court, Niu Juqin, chief lawyer of Shanghai Xizheng Law Firm, and Ye Ning, lecturer of the School of Law of Southwest University of Political Science and Law, gave keynote speeches respectively.