 Xu Yuanlang

Xu Yuanlang (徐圓朗) (died 623) was an agrarian rebel leader who rose against the rule of the Chinese dynasty Sui Dynasty late in the reign of Emperor Yang of Sui.After doing so, he did not initially claim any royal title, instead successively submitting nominally to Li Mi the Duke of Wei, Emperor Yang's grandson Yang Tong, Dou Jiande the Prince of Xia, and Tang Dynasty.