The southern region refers to the vast area south of the Qinling-Huaihe line. The area south of Huaihe River in Qinling Mountains and east of Qinghai-Tibet Plateau, especially the area south of specific or implied azimuth points.
It is generally believed in academic circles that the Qinling-Huaihe line is the northern boundary of "South". 1908, Zhang, the first president of the former geographical society of China, first proposed "Huaishui in Beiling" as the "north-south dividing line" in the book "Newly Written Geographical Documents".
The south in the concept of administrative division includes southwest, southeast, south-central and Hong Kong, Macao and Taiwan regions, namely Jiangsu, Anhui, Zhejiang, Shanghai, Hubei, Hunan, Jiangxi, Fujian, Yunnan, Guizhou, Sichuan, Chongqing, Guangxi, Guangdong, Hainan, Hong Kong, Macau and Taiwan Province Province.
Extended data
Yancheng borders the Yellow Sea in the east, Nantong in the south, Yangzhou and Taizhou in the southwest, Huai 'an in the northwest and Lianyungang in the north. The city is flat with rivers and canals. Yancheng governs 3 districts and 5 counties 1 city, with a total land area of 1693 1 square kilometer, of which the coastal beach area is 4,553 square kilometers, and the registered population in 20 17 years is 8.26150,000.
Yancheng established Du Yan County in the fourth year of founding ceremony, the Emperor of the Western Han Dynasty (former 1 19). At that time, there were fields and rivers boiling salt everywhere, and "blasphemy" meant that the river was carrying salt. In the seventh year of the Eastern Jin Dynasty (4 1 1), it was changed to Yancheng County, and the name "Yancheng" has been used ever since. Named after "Yantian around the city".
Salt lakes are distributed in Tinghu, Du Yan, Jianhu, southern Sheyang and northern Dafeng. They are in the transitional zone between Hong Chao and Tairu, but they still have the characteristics of Hong Chao and belong to Hong Chao in Jianghuai Mandarin.
Baidu Encyclopedia-South (geographical terms)