Zhongwei, a city in northwest China's Ningxia Hui Autonomous Region, has been in a battle against the Tengger Desert since the 1950s. Back then, the distance between the desert and the city was around five kilometers. A breeze would bring dust and sand from the desert into residents' homes. Now, the distance between the desert and Zhongwei has expanded to more than 25 kilometers. What's the secret behind the fight against desertification? Check out this video for more.