Su Wen (蘇文), who was in charge of managing Emperor Wu and Lady Zhao's living arrangements, and had previously tried to frame the Crown Prince by falsely accusing him of committing adultery with Emperor Wu's palace maids. The first trial began in early 91 BC involving Prime Minister Gongsun Ao (Empress Wei's brother-in-law) and his son, leading to their unexplained suicide in jail and the execution of their clan. Liu Ju's sisters Princess Zhuyi and Princess Yangshi as well as cousin Wei Kang (衛伉, Wei Qing's eldest son) were also accused of involvement in witchcraft and executed, effectively removing almost all of his political allies in the Han court. With the sanctioned witch-hunts underway, Jiang Chong and Su Wen decided to strike while the iron was hot and move against Liu Ju, once again with the accusation of witchcraft. Because the physically deteriorating Emperor Wu was then staying at his summer palace in Ganquan (甘泉, in modern Xianyang, Shaanxi), he relied heavily on Jiang and Su for day-to-day information. Jiang, with the approval from Emperor Wu, searched through various palaces, planted voodoo dolls and pieces of cloth with mysterious writings in the house of the "perpetrators", then condemned the victims on the spot. Eventually he reached the palaces of Liu Ju and Empress Wei, engaged in so much digging that there were barely any space to lay a bed. He then announced that he found overwhelming evidence of crime particularly at the Crown Prince's household. Liu Ju was shocked by this and forced to consult his close advisers. His teacher Shi De (石德), invoking the infamous story of Zhao Gao's scheme to murder Ying Fusu and raising the possibility that Emperor Wu might already be deceased, suggested to Liu Ju to start an uprising to get rid of the villains. Liu Ju initially hesitated and wanted to speedily proceed to Ganquan Palace and explain himself to his father, but when he found out that Jiang Chong's messengers were already on their way to report the false accusations, he decided to accept Shi's suggestion. He sent an individual to impersonate a messenger from Emperor Wu, and arrested Jiang and his co-conspirators – except for Su Wen, who escaped. He then denounced and personally executed Jiang, and reported his actions to his mother. Empress Wei, faced with the dilemma between her husband and son, chose to support her son and authorized Liu