He says that two-thirds of China’s almost 3,000 counties have tried artificial methods to induce more rainfall, sometimes resulting in lawsuits over rights to mine passing clouds for water. Such efforts, Zheng reports, have involved some 6,533 cannons, 5,939 rocket launchers, and numerous aircraft in an attempt to seed clouds across one-third of China’s landmass with dry ice, ammonia, and silver iodide.
照国家气象局局长郑国光的说法：“用科学技术就能拯救那些遭遇几十年来最严重旱灾的人民。”他还提到中国3000多个县中已经有2/3试行了人工降雨，有时甚至在争夺雨云方面引发法律纠纷。这项工程共动用了6533门高炮，5939个火箭发射架以及许多架次的飞机来播撒干冰，液态氮和碘化银，好让覆盖中国大陆1/3面积的云团洒下雨来。