Guozhou or Guo Prefecture (果州) was a zhou (prefecture) in imperial China, centering on modern Nanchong, Sichuan, China. It existed (intermittently) from 621 until 1227. Between 771 and 775 it was known as Chongzhou or Chong Prefecture (充州).
Zhou were historical political divisions of China. Formally established during the Han dynasty, zhou exist continuously until the establishment of the Republic of China in 1912—a period of over 2000 years. Zhou were also previously used in Korea, Vietnam, and Japan.
The earliest known written records of the history of China date from as early as 1250 BC, from the Shang dynasty, during the king Wu Ding's reign, who was recorded as the twenty-first Shang king by the written records of Shang dynasty unearthed. Ancient historical texts such as the Records of the Grand Historian and the Bamboo Annals describe a Xia dynasty before the Shang, but no writing is known from the period, and Shang writings do not indicate the existence of the Xia. The Shang ruled in the Yellow River valley, which is commonly held to be the cradle of Chinese civilization. However, Neolithic civilizations originated at various cultural centers along both the Yellow River and Yangtze River. These Yellow River and Yangtze civilizations arose millennia before the Shang. With thousands of years of continuous history, China is one of the world's oldest civilizations, and is regarded as one of the cradles of civilization.
Nanchong is a prefecture-level city in the northeast of Sichuan province, China, with an area of 12,479.96 square kilometres (4,818.54 sq mi). At the 2010 census it was home to 6,278,614 people, of whom 1,858,875 lived in the built-up area made of three urban districts. It is the second most populated city of Sichuan Province, after Chengdu. The administrative center is Shunqing District.
