Duolun county, (locate) in Inner Mongolia, only 180 kilometers away from Beijing，once suffered severe erosion and desertification（沙漠化）.
Ma Yunping, a retired soldier, (sell) six cows to collect 7,000 yuan and decided to contract 3,700 mu of deserted sandy land. Due to Duolun's unique geological（地质） environment, which consists mainly of shifting sand dunes（沙丘）, the inexperienced Ma tried planting grass under the (guide) of the forestry department. However, the sandstorms came frequently. He failed many times continued trying, learning from his mistakes.
During the first three years, planting grass became his primary job. Slowly, the yellow sand was stabilized, and touch of green appeared. In 2016, Ma established a (profession) organization, which now has over 40 members. "I want everyone in my village to (active) participate in preventing and treating desertification and to share in the green achievements," he said.
So far, in this area, Ma has planted about 400,000 trees in total. All of them have grown into flourishing vegetation, and not a bit of yellow sand can (find). Reflecting the 20-year journey of fighting against desertification, Ma has long engraved the patches of green on the dunes into his heart. "I am so fond of the greenery, and I want to keep (follow) it," Ma said.
