Fei means flying; Drift away
first, the etymology explains
pictophonetic characters. Rain means that it is raining, which means that rain and snow are abundant. It's not a sound, it's not like a bird's wings spreading left and right, and it's contradictory. It means that rain and snow fall away from the sky, and it means that rain and snow are as dense as feathers on a bird's wings. The original meaning is that rain and snow are dense.
Second, the group words
Fenfei, Feifei, Feiwei, Feiluo, Yanfei, etc.
Extended information:
First, Fenfei [fēn fēi]?
flying in succession.
second, Fei Fei [fēi fēi]?
(rain, snow, smoke, clouds, etc.) is in full bloom.
3. Fei Wei [fēi wēi]?
the appearance of fog, drizzle, etc.
4. Fei Luo [Fē I Lu T]?
scattered in succession.
5. Yan Fei [yán fēi]?
describe the dense snow.