Do you play Ant Forest? It is online game on Alipay. Players collect "energy" by (do) something environmentally-friendly. They can grow and water (they) own "trees" with the "energy". If the "trees" are big enough, Alipay some other companies will plant real trees in the desertarea of China. Every year millions of trees (plant) in this way.
This is part of China's tree-planting program. It (hope) to stop the desert from becoming larger. 1978, China has planted over 66 billion trees in the north. It is known as "the Great Green Wall". For example, Saihanba in Hebei Province was once a desert, now it has become the biggest man-made forest in China.
"China is making the world much (green) than before. It sets a good example and has many (lesson) to share with the world." said the United Nations Environment Program.