A herd of blue sheep wondering about on the lush grassland of Changtang National Nature Reserve. [Photo: Xinhuanet]
![A herd of blue sheep wondering about on the lush grassland of Changtang National Nature Reserve. [Photo: Xinhuanet]](http://images.china.cn/attachement/jpg/site1007/20090811/000d87ad3cdd0beb0cfc53.jpg "A herd of blue sheep wondering about on the lush grassland of Changtang National Nature Reserve. [Photo: Xinhuanet]")
