A tourist car runs passing by the road sign of the Changtang National Nature Reserve. [Photo: Xinhuanet]
![A tourist car runs passing by the road sign of the Changtang National Nature Reserve. [Photo: Xinhuanet]](http://images.china.cn/attachement/jpg/site1007/20090811/000d87ad3cdd0beb0cd236.jpg "A tourist car runs passing by the road sign of the Changtang National Nature Reserve. [Photo: Xinhuanet]")
