Photo taken on March 21, 2013 shows a scenic view of the Danxia Landform in Guide County of the Hainan Tibet Autonomous Prefecture, northwest China's Qinghai Province. Danxia is a special landform from reddish sandstone that has been eroded over time into a series of mountains surrounded by curvaceous cliffs and many unusual rock formations. (Xinhua/Wang Bo)
Birds fly over the Yellow River in Guide County of the Hainan Tibet Autonomous Prefecture, northwest China's Qinghai Province, March 21, 2013. (Xinhua/Wang Bo)
Photo taken on March 21, 2013 shows a scenic view of the Yellow River in Guide County of the Hainan Tibet Autonomous Prefecture, northwest China's Qinghai Province. (Xinhua/Wang Bo)
Combination photo taken on March 21, 2013 shows an egret on the wetland of the Yellow River in Guide County of the Hainan Tibet Autonomous Prefecture, northwest China's Qinghai Province. (Xinhua/Wang Bo)
Photo taken on March 21, 2013 shows a scenic view of the Qianzi Lake near the Yellow River in Guide County of the Hainan Tibet Autonomous Prefecture, northwest China's Qinghai Province. (Xinhua/Wang Bo)