History of Fergana

The ancient kingdom referred to as Dayuan (, "Great Yuan", literally "Great Ionians") in the Chinese chronicles is now generally accepted as being in the Ferghana Valley. It is sometimes, though less commonly, written as Dawan). Dayuan were Greeks, the descendants of the Greek colonists that were settled by Alexander the Great in Ferghana in 329 BCE, and prospered within the Hellenistic realm of the Seleucids and Greco-Bactrians, until they were isolated by the migrations of the Yuezhi