The researchers studied how the climate in China changed from 1981 to 2010. They divided China into different regions based on temperature, aridity, and climate sub-regions. They found that due to climate warming, some temperature zones in eastern China shifted northward. In North China, Northeast China, and Northwest China, the boundary between semi-arid and sub-humid regions moved eastward and southward. Overall, many arid regions in Hexi Corridor, Xinjiang, and the Tibetan Plateau became more humid during this period.