After Lu Dingzhao's death, the Gui draft in the capital temporarily came to an end. Jiang Xinbai made up for his fault, but he asked the emperor to send him to Tingzhou, which turned out to be the source of Gui grass being transported to the capital.Jiang Xinbai was worried about Yan Nanxing, so she left only a letter and went to Tingzhou with Yao Qianshu to continue investigating the Guicao case. Although Yan Nanxing was reluctant to give up, she understood everything Jiang Xinbai had done..