The Yuezhi 月氏 were a nomad people roaming Central Asia between the 2nd cent. BCE - 1st cent. CE. The Chinese called them "the Great Yuezhi". They may have been the same as or closely related to the Tocharians originally settling in the arid grasslands of the eastern Tarim Basin area, in what is today Xinjiang and western Gansu, China, before they migrated to Transoxiana, Bactria and then northern South Asia, where they may have had a part in forming the Kushan Empire.