一叶知秋 yī yè zhī qiū

DEFINITIONS

  1. lit. the falling of one leaf heralds the coming of autumn (idiom)
  2. fig. a small sign can indicate a great trend
  3. a straw in the wind

CHARACTERS

一 yī
HSK 1
one; a, an; alone
叶 yè
HSK 4
to harmonize, to rhyme; to unite; (borrowed for) leaf
知 zhī
HSK 2
know, perceive, comprehend
秋 qiū
HSK 3
autumn, fall; year