Photo taken on Dec. 17, 2017 shows the scenery of cherry valley on Wuliang Mountain shrouded in morning mist in Yi Autonomous County of Nanjian, southwest China's Yunnan Province. (Xinhua/Hu Chao)

Photo taken on Dec. 16, 2017 shows the scenery of cherry valley on Wuliang Mountain at sunset in Yi Autonomous County of Nanjian, southwest China's Yunnan Province. (Xinhua/Hu Chao)

Photo taken on Dec. 16, 2017 shows the scenery of cherry valley on Wuliang Mountain at sunset in Yi Autonomous County of Nanjian, southwest China's Yunnan Province. (Xinhua/Hu Chao)

Photo taken on Dec. 17, 2017 shows the scenery of cherry valley on Wuliang Mountain in Yi Autonomous County of Nanjian, southwest China's Yunnan Province. (Xinhua/Hu Chao)

Photo taken on Dec. 16, 2017 shows the scenery of cherry valley on Wuliang Mountain at sunset in Yi Autonomous County of Nanjian, southwest China's Yunnan Province. (Xinhua/Hu Chao)

Photo taken on Dec. 16, 2017 shows the scenery of cherry valley on Wuliang Mountain at sunset in Yi Autonomous County of Nanjian, southwest China's Yunnan Province. (Xinhua/Hu Chao)

Photo taken on Dec. 16, 2017 shows the scenery of cherry valley on Wuliang Mountain at sunset in Yi Autonomous County of Nanjian, southwest China's Yunnan Province. (Xinhua/Hu Chao)