Photo taken on Oct. 27, 2017 shows the autumn scenery of Qinling Mountains in northwest China's Shaanxi Province. (Xinhua/Shao Rui)

Photo taken on Nov. 5, 2017 shows the autumn scenery of Qinling Mountains in northwest China's Shaanxi Province. (Xinhua/Shao Rui)

Photo taken on Oct. 27, 2017 shows the autumn scenery of Qinling Mountains in northwest China's Shaanxi Province. (Xinhua/Shao Rui)

Photo taken on Nov. 5, 2017 shows the autumn scenery of Pingheliang nature reserve of Qinling Mountains in northwest China's Shaanxi Province. (Xinhua/Shao Rui)