 Soon, a plot led by the general Yuwen Huaji came to fruition, and Emperor Yang, along with his sons Yang Jian and Yang Gao and grandson Yang Tan the Prince of Yan were killed.Empress Xiao and her ladies in waiting wrapped him in a mat and made caskets for both Emperor Yang and Yang Gao.Yuwen Huaji declared Emperor Yang's nephew Yang Hao the Prince of Qin emperor, then abandoned Jiangdu and headed back north, taking Empress Xiao and her ladies in waiting north.