鸡犬升天
Traditional (Taiwan):
雞犬升天
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(when a person attains enlightenment and immortality), even his chickens and dogs will ascend to heaven with him (idiom)
lit.
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(when somebody attains a position of power and influence), their relatives and friends also benefit
fig.
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(2nd half of the saying 一人得道，鸡犬升天)
Character by character
Sources