Kushan Empire
The Chinese first referred to these people as the Yuezhi and said they established the Kushan Empire, although the relationship between the Yuezhi and the Kushans is still unclear. Ban Gu's "Book of Han" tells us the Kushans (Kuei-shuang) divided up Bactria in 128 BC. Fan Ye's "Book of Later Han" "relates how the chief of the Kushans, Ch'iu-shiu-ch'ueh (the Kujula Kadphises of coins), founded by means of the submission of the other Yueh-chih clans the Kushan Empire."