 Emperor Xiaowen approved of the marriage, Princess Pengcheng was unwilling to marry Feng Su, so she fled out of Luoyang and sought out Emperor Xiaowen on the frontline, revealing to him Empress Feng's affair with Gao.Emperor Xiaowen was initially unwilling to believe the accusation and kept it secret, but Empress Feng became nervous and, along with her mother Lady Chang, engaged witches to try to curse Emperor Xiaowen, who was already ill by this time, to death.However, Emperor Xiaowen did not die, and after he returned to Luoyang in 499, he interrogated Gao and Shuang, and both admitted.