Princess Taihe_

Princess Taihe, later, in 843, known as Princess Ding'an (定安公主) or Princess Anding (安定公主), was a princess of the Chinese Tang dynasty and a khatun (empress) of the Uyghur Khaganate. She was married to the Uyghur Chongde Qaghan as part of the Heqin system of marriages between Tang princesses and Uyghur qaghan, and she was later subject to the Uyghur levirate marriage system. She suffered through the Uyghur Khaganate's subsequent collapse before being welcomed back to the Tang court. As the last Tang princess to be part of the Heqin system, Taihe marked the end of the marriage alliances between the Tang dynasty and Uyghurs.