GaochangGaochang (; Old Uyghur: Qocho), also called Khocho, Karakhoja, Qara-hoja, Kara-Khoja or Karahoja (قاراغوجا in Uyghur), was a ruined, ancient oasis city on the northern rim of the inhospitable Taklamakan Desert in present-day Xinjiang, China. The site is also known in published reports as Chotscho, Khocho, Qocho or Qočo. During the Yuan dynasty and Ming dynasty, Gaochang was referred to as "Halahezhuo" () (Qara-khoja) and Huozhou. The ruins are located 30 km southeast of modern Turpan, at a place called Idykut-schari or Idikutschari by local residents.
Fergana ValleyThe Fergana Valley (Фарғона водийси, Farg'ona vodiysi; Fergana öröönü; Vodii Farg'ona) in Central Asia lies mainly in eastern Uzbekistan, but also extends into southern Kyrgyzstan and northern Tajikistan. Divided into three republics of the former Soviet Union, the valley is ethnically diverse and in the early 21st century was the scene of conflict. A large triangular valley in what is an often dry part of Central Asia, the Fergana owes its fertility to two rivers, the Naryn and the Kara Darya, which run from the east, joining near Namangan, forming the Syr Darya river.