Gaochang, also called Khocho, Karakhoja, Qara-hoja, Kara-Khoja or Karahoja, was a ruined ancient oasis city on the northern rim of the inhospitable Taklamakan Desert in present-day Sanbu Township, 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. Artistic depictions of the city have been published by Albert von Le Coq. Gaochang is considered in some sources to have been a "Chinese colony", that is, it was located in a region otherwise occupied at the time by West Eurasian peoples.