Technically, no, it is false that China has finally halted the spread of the Gobi Desert by planting trees, since although they are currently using this tactic, it has not led to a full "halt".
The Gobi Desert is a large desert region in Asia. It covers part of Northern and Northeastern China and Southern Mongolia. The Gobi is a rain shadow desert formed by the Tibetan Plateau blocking precipitation from the Indian Ocean reaching the Gobi territory.
The Three-North Shelter Forest Program or Great Green Wall is a series of human-planted trees in China, designed to hold back the expansion of the Gobi Desert. The program started in 1978 and is planned to be completed by the year 2050. This program was set up because the desert overtakes 1,400 sq. mi. of grassland every year.
Although the plan is being carried out for several years it has not halted the spread of the Gobi Desert yet.
