First, remember the two lakes, Guangdong, Guangdong, (Hunan, Hubei, Guangdong, Guangxi, Henan, Hebei, Shanxi, Shandong), Wuhe (Xinjiang), Ning Er, Qingshan, Gansu, (Jiangsu, Jiangxi, Zhejiang, Heilongjiang, Xinjiang, Liaoning, Ningxia, Qinghai, Shaanxi, Gansu) with rhyme. Remember Inner Mongolia in the north, Heijiliao in the three northeastern provinces, southwest Yunnan and west Sihong, Ningxia and Qingxin in the northwest, Hong Kong and Macao in the south of Guangdong, Fuhaitai, the Yellow River, the two rivers and mountains, Beijing and Tianjin, and the Yangtze River, two lakes, three rivers and Anshang. (refers to the middle and lower reaches of the Yangtze River) 3. According to the abbreviation, municipalities and special administrative regions: Beijing, Tianjin, Shanghai, Chongqing, Hong Kong and Macao. Autonomous regions: Tibet, Mongolia and Xinguining. Twenty-three provinces: Heijiliao, Hebei Shandong Henan, Jiangsu Zhejiang Anhui, Hubei Hunan Jiangxi, Sichuan Yunnan Guizhou, Guangdong Fujian Qiong, Shanxi Shaanxi Gansu, Qinghai Taiwan Province and Taiwan Province to be returned.