| H-H | L-H | L-L | H-L |
2010 | Beijing, Tianjin, Hebei, Jilin, Shanghai, Jiangsu, Zhejiang, Fujian, Shandong, Hunan, Guangdong and Hainan | Liaoning, Inner Mongolia, Henan, Guangxi and Chongqing | Hubei, Sichuan, Yunnan, Shaanxi, Gansu, Qinghai, Ningxia and Xinjiang | Shanxi, Heilongjiang, Anhui, Jiangxi and Guizhou |
2014 | Beijing, Tianjin, Hebei, Shanghai, Jiangsu, Zhejiang, Anhui, Fujian, Shandong, Henan, Hubei, Hunan, Guangdong and Hainan | Inner Mongolia, Liaoning, Jilin, Guangxi, Chongqing and Yunnan | Shanxi, Sichuan, Shaanxi, Gansu, Qinghai, Ningxia and Xinjiang | Heilongjiang, Jiangxi and Guizhou |