Upon the news of Emperor Yang's death arriving at Sui's two capitals, two different reactions came about. At Chang'an, Li Yuan had Yang You pass the throne to him, establishing Tang Dynasty as its Emperor Gaozu, while at Luoyang, the Sui officials, led by a collective leadership of Duan Da, Wang Shichong, Yuan Wendu (), Huangfu Wuyi (), Lu Chu (), Guo Wenyi (), and Zhao Changwen (), declared Yang Tong emperor.
