Which feature that is 6380 kms long has traditionally been considered a dividing line between North and South China?
North China North China North China (; literally "China's north") is a geographical region of China, lying North of the Qinling Huaihe Line. The heartland of North China is the North China Plain, or the Yellow River Plain. North China is usually restricted to the northern part of China proper (inner China and excludes Xinjiang and often Manchuria and Northeast China. The vast region in China from the Yellow River Valley south to the Yangtze River was the centre of Chinese empires and home to Confucian civilization. In prehistory and early history, the plain (Henan in particular) is considered the origin of
Dividing line between metals and nonmetals himself noted that the line could not be drawn very accurately. Dividing line between metals and nonmetals The dividing line between metals and nonmetals can be found, in varying configurations, on some representations of the periodic table of the elements (see mini-example, right). Elements to the lower left of the line generally display increasing metallic behaviour; elements to the upper right display increasing nonmetallic behaviour. When presented as a regular stair-step, elements with the highest critical temperature for their groups (Li, Be, Al, Ge, Sb, Po) lie just below the line. This line has been called the "amphoteric line," the