What do Chinese characters prefixed with "rain" have to do with?

Most Chinese characters prefixed with "rain" are related to water or liquid. For example, "rain" itself represents water falling from the sky, while words such as "snow", "frost" and "dew" are based on the word "rain" and represent different forms and states of snow, frost and dew at night. In addition, the word "zero" represents the dispersed state of water droplets, while "thunder" and "hail" are related to the weather phenomenon in rainy days. In a word, it can be said that most Chinese characters prefixed with rain are related to various forms and expressions of water and liquid.