Recently, the topic of “Nearly half of China’s major cities are sinking” has surged on Chinese social media, prompted by a paper titled “A national-scale assessment of land subsidence in China’s major cities” published on April 18 in the scientific journal Science. The paper, authored by a research team led by Ao Zurui, an associate researcher at South China Normal University, utilized satellite observation technology to measure the elevation changes of the land surface in 82 major cities, which account for
