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Division of four major regions in China.
| Regions | Provinces and municipalities | Numbers |
|---|---|---|
| West | Xinjiang, Qinghai, Gansu, Ningxia, Shaanxi, Guizhou, Sichuan, Chongqing, Yunnan, Guangxi, Shanxi | 11 |
| Middle | Henan, Anhui, Hunan, Hubei, Jiangxi, Inner Mongolia | 6 |
| Northeast | Heilongjiang, Jilin, Liaoning | 3 |
| Coastal areas | Beijing, Tianjin, Hebei, Shandong, Shanghai, Jiangsu, Zhejiang, Fujian, Guangdong, Hainan | 10 |
