Shi Tianze was a Han Chinese who lived in the Jin dynasty (1115–1234). Interethnic marriage between Han and Jurchen became common at this time. His father was Shi Bingzhi (, Shih Ping-chih). Shi Bingzhi was married to a Jurchen woman (surname Na-ho) and a Han Chinese woman (surname Chang), it is unknown which of them was Shi Tianze's mother. Shi Tianze was married to two Jurchen women, a Han Chinese woman, and a Korean woman, and his son Shi Gang was born to one of his Jurchen wives. His Jurchen wive's surnames were Mo-nien and Na-ho, his Korean wife's surname was Li, and his Han Chinese wife's surname was Shi. Shi Tianze defected to the Mongol Empire's forces upon their invasion of the Jin dynasty. His son Shi Gang married a Kerait woman, the Kerait were Mongolified Turkic people and considered part of the "Mongol nation".