Nan Mountains

In the lowlands which lie between the Pé, or North Mountains, and the Nan, or South Mountains, run the lower courses of the two great rivers, twin giants they might be termed, the Hwangho and the Yangtszkiang. Here, too, are the most fertile and the most densely-peopled provinces of China. South of the Nan Mountains runs the Si, West, or Pearl River.

1869 January, “Notes Illustrative of the Map of China.”, in The Missionary Herald, volume LXV, number I, →OCLC, page 2

The Nan Mountains (Nan Ling) are composed of many ranges running from north-east to south-west. These ranges form the watershed between the Yangtze to the north and the Pearl (Zhu) River to the south. The main peaks along the watershed are above 5,000 feet (1,500 metres), and some are more than 6,500 feet (2,000 metres). But a large part of the land to the south of the Nan Mountains is also hilly; flatland does not exceed 10 per cent of the total area.

2008, The Britannica Guide to Modern China, Running Press, →ISBN, →LCCN, →OCLC, →OL, page 14