一叶知秋 (一葉知秋) yī yè zhī qiū

yī yè zhī qiū set phrase the falling of one leaf heralds the coming of autumn; a small sign can indicate a great trend; a straw in the wind
Domain: Idiom 成语 , Subdomain: , Concept:
Notes: (CC-CEDICT '一葉知秋')

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