There were many rebellions during Tang dynasty.

Who was Pugu Huai'en who incited the Huhe, Tubo and Dangxiang tribes to rebel? Also, who was this General Guo Ziyi who stopped the rebellion? Also who was this Yao Geluo, the commander of Huihe troops? How long did this rebellion last?

In 817 AD, there was this rebellion by Wu Yuanji, governor of Caizhou. Who was Wu Yuanji exactly?What's his background etc? Who were these Ding Shiliang, Chen Guangqia, Wu Xiulin who helped Wu Yuanji in his rebellion? Who was this Li Suo who put down this rebellion?