Qinling Mountains is east-west mountains that traverse central China. It starts from the south of Gansu Province, passes through the south of Shaanxi Province and ends in the west of Henan Province. Its main body is located at the junction of the south of Shaanxi Province and the north of Sichuan Province, and is east-west. It is the watershed of Weihe River, a tributary of the Yellow River, and Jialing River and Han River, tributaries of Yangtze River. Qinling-Huaihe is an important north-south boundary in China's geography. Qinling Mountains is also honored as the dragon veins of the Chinese civilization. Qinling Mountains have obvious blocking effects on airflow operation so that in summer the humid ocean currents are not easy to penetrate into the northwest, making the northern climate dry, and in winter cold waves are blocked southward.