Assault on Jiucheng Palace
A Turkic noble strikes at the Tang emperor
At the Jiucheng Palace in the mountains of Shaanxi, Ashina Jiesheshuai -- a Turkic noble and general serving the Tang dynasty -- launched a brazen assault on Emperor Taizong himself. The attack, born of personal grievance and political frustration, shook the imperial court to its foundations. Though the assault was repelled and Jiesheshuai killed, it exposed the tensions between the Tang court and its Turkic military allies that would simmer for generations.