Tibet is China’s important ecological safety barrier, and is also important for the world. Tibet has been following the economic, social, and natural rules to achieve sustainable development. It is one of regions with the best environmental quality in the world. [Photo/Xinhua]

Tibet is China’s important ecological safety barrier, and is also important for the world. Tibet has been following the economic, social, and natural rules to achieve sustainable development. It is one of regions with the best environmental quality in the world. [Photo/Xinhua]

Tibet is China’s important ecological safety barrier, and is also important for the world. Tibet has been following the economic, social, and natural rules to achieve sustainable development. It is one of regions with the best environmental quality in the world. [Photo/Xinhua]