Aerial photo taken on Sept. 14, 2020 shows the view of Kubuqi Desert in Ordos, north China's Inner Mongolia Autonomous Region. After decades of hard work, the Kubuqi Desert in Inner Mongolia Autonomous Region, once known as the "sea of death" difficult for birds to fly across, has turned green. (Xinhua/Lian Zhen)

Aerial photo taken on Sept. 14, 2020 shows the view of Kubuqi Desert in Ordos, north China's Inner Mongolia Autonomous Region. After decades of hard work, the Kubuqi Desert in Inner Mongolia Autonomous Region, once known as the "sea of death" difficult for birds to fly across, has turned green. (Xinhua/Lian Zhen)

Aerial photo taken on Sept. 14, 2020 shows a village in Ordos, north China's Inner Mongolia Autonomous Region. After decades of hard work, the Kubuqi Desert in Inner Mongolia Autonomous Region, once known as the "sea of death" difficult for birds to fly across, has turned green. (Xinhua/Lian Zhen)

Aerial photo taken on Sept. 14, 2020 shows the view of Kubuqi Desert in Dalad Banner of Ordos, north China's Inner Mongolia Autonomous Region. After decades of hard work, the Kubuqi Desert in Inner Mongolia Autonomous Region, once known as the "sea of death" difficult for birds to fly across, has turned green. (Xinhua/Lian Zhen)

Aerial photo taken on Sept. 14, 2020 shows the view of Kubuqi Desert in Dalad Banner of Ordos, north China's Inner Mongolia Autonomous Region. After decades of hard work, the Kubuqi Desert in Inner Mongolia Autonomous Region, once known as the "sea of death" difficult for birds to fly across, has turned green. (Xinhua/Lian Zhen)

Aerial photo taken on Sept. 14, 2020 shows the view of Kubuqi Desert in Dalad Banner of Ordos, north China's Inner Mongolia Autonomous Region. After decades of hard work, the Kubuqi Desert in Inner Mongolia Autonomous Region, once known as the "sea of death" difficult for birds to fly across, has turned green. (Xinhua/Lian Zhen)