Southern Xinjiang or Nanjiang (Chinese: 南疆; pinyin: Nánjiāng) is the southern half of the Xinjiang Uyghur Autonomous Region of China.
Its historical name was Altishahr (Chinese: 回部; pinyin: Huíbù), which also includes some territories in modern-day Afghanistan, Kyrgyzstan, and Tajikistan.
The name "Chinese Turkestan" was commonly used by Europeans to refer to Southern Xinjiang or Xinjiang as a whole[1] especially during the Qing dynasty.
Southern Xinjiang includes the Tarim Basin and the adjacent mountainous area which includes Aksai Chin.
Most of the inhabitants in Southern Xinjiang are Uyghurs.