Inner Mongolia Autonomous Region Called "Inner Mongolia" for short, the region is on the northern frontier of China, bordered by Mongolia and Russia on the north. It covers 1.1975 million square km, with a population of 23.864 million at the end of 2005, including 4.2112 million Mongolians. Hohhot is the regional capital.

Guangxi Zhuang Autonomous Region Called "Gui" for short, Guangxi lies to the western part of south China, faces Beibu Gulf on the south and adjoins Viet Nam on the southwest. It covers 237,700 square km, with a population of 49.25 million at the end of 2005. Nanning is the regional capital.

Tibet Autonomous Region Called "Zang" for short, Tibet lies on the Qinghai-Tibet Plateau on the southwestern border of China, adjacent to India, Nepal, Bhutan and Myanmar. It covers 1.2284 million square km. Its total population stood at 2.77 million at the end of 2005, a year-on-year increase of 33,200. Lhasa is the regional capital.

Ningxia Hui Autonomous Region Called "Ning" for short, Ningxia is located on the middle reaches of the Yellow River in the northwest of China. It covers 62,800 square km, with a population of 5.962 million at the end of 2005. Yinchuan is the regional capital.

Xinjiang Uygur Autonomous Region Called "Xin" for short, Xinjiang lies to the northwestern border of China, adjacent to Mongolia, Russia, Kazakhstan, Kyrgyzstan, Tajikistan, Afghanistan, Pakistan and India. Covering an area of 1.6558 million square km, Xinjiang is the largest of all Chinese provinces and autonomous regions, with a population of 20.1035 million at the end of 2005, a year-on-year increase of 472,400. Urumqi is the regional capital.