Yang Qiuchi reported the case of Jianwen's remnants in Miaojiang. The emperor was very pleased and appointed Yang Qiuchi to an important task. In name, he ordered him to go to Miaojiang to serve as an official, but in fact, he secretly tracked down the traces of Jianwen's remnants in order to completely eradicate Jianwen's remnants. Finally, with the help of the people of Miaojiang, he found the lair of Jianwen's remnants and successfully captured Zhu Wenkui, the son of Emperor Jianwen, and shattered the plan of Jianwen's remnants to restore the country.