Wu Zetian (624–705 CE) is the only woman in all of Chinese history who ever ruled as emperor under her own name. Starting out as a palace concubine, she eventually became the leader of her own short-lived Zhou Dynasty....
In the year 626 CE, Li Shimin—who would later become Emperor Taizong of the Tang dynasty—set up an ambush at Xuanwu Gate and killed both of his brothers, Crown Prince Li Jiancheng and Prince Li Yuanji....


