“Cloud seeding technology” works by sprinkling clouds with dry ice and silver iodide to increase rain or snow. The aerosols and other particulates are injected into the skies via airplanes and are visible as "chemtrails".
By 2022, China had invested some $168 million into efforts to control the weather. It was employing somewhere in the vicinity of 35,000 people within in its “Weather Modification Department,” which has offices all across China, and generating around 55 billion tonnes of artificial rain annually.