What is the precipitation standard of light rain?

According to the regulations of China Meteorological Bureau, light rain refers to the rain whose precipitation does not exceed 10 mm within 24 hours. The characteristics of light rain are that raindrops are clearly visible, the ground does not splash water, the water in the depression is slow, and only the eaves drip. You can walk a short distance in the rain without an umbrella, and you won't get all your clothes wet.

Rainwater is an indispensable part of the earth's water cycle, and it is also the only way for almost all terrestrial plants far away from rivers to replenish fresh water. It can irrigate crops and help plant trees. Light rain can reduce the dust in the air and lower the temperature; Rain can isolate the noisy world, create a quiet environment and wash the streets. However, too much rain will affect the growth of plants, and the long-lasting gloomy light rain will easily lead to the return of moisture and mildew.