Emperor Taizong of Tang
Xu Hui was the child prodigy daughter of Xu Xiaode, from Changcheng in Huzhou (in modern Zhejiang province). She became a minor consort to the Tang Dynasty's second emperor, Emperor Taizong of Tang. Although originally appointed as a fifth-rank court lady, a "Talented Lady" (, 才人), she was later promoted to an imperial concubine status, as a "Replete of Mien" (, 充容).