Why does the Red Army snow heavily in the mountains of Jin Jia?

Jin Jia Mountain, also known as "Jin Jia Mountain", is called "Jiaji" in Tibetan, and Jin Jia is transliteration, which means very high and steep. Located in the southeast of Xiaojin County, it belongs to Qionglai Mountain Range, spanning between Dawei Township of Xiaojin County and Baoxing County of Ya 'an District, with an altitude of 4 124 meters. The terrain here is steep, the mountains are continuous, the obstacles in the mountains are piled up, the dangerous rocks are abrupt, the cliffs are steep, the air is thin and the weather is changeable. There is a local folk song: "Jin Jia Mountain, Jin Jia Mountain, birds can't fly, people can't climb." If you want to cross the Jin Jia Mountains, unless the gods come to earth! "It is a true portrayal of this harsh environment.

Jin Jia Mountain is the first snow-capped mountain that the Chinese Workers and Peasants Red Army climbed on foot in the Long March. On the afternoons of June 1935 and 12, the 4th Regiment of the 2nd Division of the Red Army Corps, led by Wang Kaixiang, the head of the regiment, and Yang Chengwu, the political commissar, finally successfully crossed the Jin Jia Mountains from Qiao Qi Township at the southern foot of the Jin Jia Mountains and joined the 74th Regiment of the 25th Division of the Red Army, which was carrying out its mission at Muchenggoukou, Daxu Township at the foot of the mountain. The unexpected encounter laid the foundation for the victory of the first and fourth armies of the Chinese Red Army of Workers and Peasants.