Cui (Chinese: 崔; pinyin: Cuī; Wade–Giles: Ts'ui), alternatively spelled Tsui or Tsway, is one of the 80 most common surnames in China, with around 0.28% of the Chinese population having the surname (around 3.4 million in 2002).
A grandson of Jiang Ziya named Jizi (季子), an heir apparent, chose to relinquish his claim to the throne in favour of his brother Shuyi (叔乙), and went to live in the Cui estate (崔邑, in present-day Shandong).
[4] Moriya Mitsuo wrote a history of the Later Han-Tang period of the Taiyuan Wang.
[5] The prohibition on marriage between the clans issued in 659 by the Gaozong Emperor was flouted by the seven families since a woman of the Boling Cui married a member of the Taiyuan Wang, giving birth to the poet Wang Wei.
[12] A Mongol clan Cuijuk Hala (崔珠克氏) also adopted this surname during the Qing dynasty.