Photo taken on Oct. 9, 2012 shows an autumn scenery of the Pangquangou state forest park in Jiaocheng County, north China's Shanxi Province. (Xinhua/Yan Yan)

Photo taken on Oct. 9, 2012 shows an autumn scenery of the Pangquangou state forest park in Jiaocheng County, north China's Shanxi Province. (Xinhua/Yan Yan)

Photo taken on Oct. 9, 2012 shows an autumn scenery of the Pangquangou state forest park in Jiaocheng County, north China's Shanxi Province. (Xinhua/Yan Yan)

Photo taken on Oct. 9, 2012 shows an autumn scenery of the Pangquangou state forest park in Jiaocheng County, north China's Shanxi Province. (Xinhua/Yan Yan)

Photo taken on Oct. 9, 2012 shows an autumn scenery of the Pangquangou state forest park in Jiaocheng County, north China's Shanxi Province. (Xinhua/Yan Yan)