A tourist poses for photos at Changbai Mountain Tianchi in northeast China's Jilin Province, Sept. 13, 2014. Changbai Mountain Nature Reserve, established in 1960, was listed in the UNESCO's "Man and the Biosphere" program in 1980. Approved by the State Council in 1986, it became a state-level nature reserve. (Xinhua/Zhang Jian)

Photo taken on Sept. 13, 2014 shows the hot spring of Changbai Mountain in northeast China's Jilin Province. Changbai Mountain Nature Reserve, established in 1960, was listed in the UNESCO's "Man and the Biosphere" program in 1980. Approved by the State Council in 1986, it became a state-level nature reserve. (Xinhua/Zhang Jian)

 Photo taken on Sept. 13, 2014 shows the hot spring of Changbai Mountain in northeast China's Jilin Province. Changbai Mountain Nature Reserve, established in 1960, was listed in the UNESCO's "Man and the Biosphere" program in 1980. Approved by the State Council in 1986, it became a state-level nature reserve. (Xinhua/Zhang Jian)

Photo taken on Sept. 13, 2014 shows the Changbai Mountain Tianchi in northeast China's Jilin Province. Changbai Mountain Nature Reserve, established in 1960, was listed in the UNESCO's "Man and the Biosphere" program in 1980. Approved by the State Council in 1986, it became a state-level nature reserve. (Xinhua/Zhang Jian)