2. Qinling Mountain is an east-west mountain range, which runs through the middle of China. It starts from Baishi Mountain in the north of Lintan County, Gansu Province in the west, and Maiji Mountain in the south of Tianshui in the east longitude enters Shaanxi. At the junction of Shaanxi and Henan, it is divided into three branches, Xiaoshan in the north and Xiong 'er Mountain in the middle. The south branch is Funiu Mountain. It is about 1600 km long and is the watershed between Weihe River, a tributary of the Yellow River, and Jialing River and Hanshui River, tributaries of the Yangtze River.
The extended data Kunlun Mountain-Qilian Mountain-Qinling orogenic system, located in Kunlun Mountain, Qilian Mountain and Qinling Mountain, is a complex orogenic system with nearly east-west distribution, which is formed by the superposition of two dynamic systems: the ancient Asian Ocean and the Tethys. It is a orogenic system with complex structure and nearly east-west distribution, which is composed of the ancient Asian Ocean and Tethys. Westward through Pamir, Coptic, Caucasus, connected with Wallis orogenic system in Europe; East through the Dabie Mountains, through the Tancheng-Lujiang fault zone, and then through the northern Jiangsu-Jiaonan region, the easternmost point reaches the Linjin River basin in North Korea.