1 to rain

1 variant: 夜 yè

1 midnight

2 in the middle of the night

1 nightclub

1 night

2 classifier: 个 gè

1 a sudden shower towards the end of summer brings an abrupt arrival of autumn (idiom)

1 all thunder but no rain (idiom)

2 a lot of noise but no action

1 it's a small world (idiom)

1 lit. to stare at the ceiling while writing a book (idiom); to put one's whole body and soul into a book

1 lit. to make night as day (idiom); fig. to burn the midnight oil

2 work especially hard