一人得道，鸡犬升天
yī rén dé dào , jī quǎn shēng tiān
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1 lit. when a man achieves the Dao, his poultry and dogs rise to Heaven (idiom)
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2 fig. to ride on sb else's success
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3 Once one man gets a government position, all his cronies get in too
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4 Once sb has cracked the problem, every Tom, Dick and Harry can do it