一叶知秋
yī yè zhī qiū
lit. the falling of one leaf heralds the coming of autumn (idiom)
fig. a small sign can indicate a great trend; a straw in the wind
ReviewReviewyī yè zhī qiū
lit. the falling of one leaf heralds the coming of autumn (idiom)
fig. a small sign can indicate a great trend; a straw in the wind