Driving to Shannan of China's Xizang along the road by the bank of Yarlung Zangbo River, you may find that the once sand dune area has become a vast oasis after decades of afforestation, served as the "Green Great Wall" guarding the clear water and blue sky here.

Filming: Xinhua

Editor: Ni Weijing, Zhi Xinghua

Translator: Tenzin Seldron, Jia Dan

Review: Li Chengye, Zhang Qi