Cai ( 蔡 , In the Western Jin Dynasty , Jiyang Commandery ( ) was divided into The State of Jiyang during the Reign of Emperor Hui of the Western Jin Dynasty , and the Eastern Jin Dynasty was changed to Jiyang County , zhi jiyang County ( present-day northeastern Lankao County , Henan ) , deriving from the surname Ji. During the Western Zhou Dynasty, Shudu, the son of King Wen of Zhou, was enfeoffed to Cai, and his descendants took the state as their clan. During the Spring and Autumn Period, the State of Jin had Cai Mo, the State of Qin had Cai Ze, and the Han Dynasty had Cai Yi, all of whom were descendants of his descendants.