Gaochang, also called Khocho, Karakhoja, Qara-hoja, Kara-Khoja or Karahoja, was an 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.