"Cut the candle at the west window" comes from the poem "A message to friends in the north on a rainy night" written by Li Shangyin, a poet in the Tang Dynasty. The original sentence is "when * * * cuts the candle at the west window, but talks about the rain at night". This poem expresses the poet's yearning for his distant wife, hoping to spend a warm evening with her and cut candles at the west window together, which means that the two will get together and enjoy family happiness. The idiom "Cut the candle at the west window" was later widely used to describe relatives, friends and lovers getting together at night and spending a happy time together, especially to describe the affectionate dialogue and intimate moments between husband and wife or lovers.