Senses
一人得道，鸡犬升天/ 一人得道，雞犬升天 ride someone's coat-tails to success
When one person gains power or attains enlightenment, their relatives and followers also benefit; based on the legend of 刘安 who became an immortal and took his pets to heaven with him
一人得道，鸡犬升天/ 一人得道，雞犬升天 nepotism
when one person attains power, their cronies or family members follow suit; literal sense: when one person achieves immortality and ascends to heaven, even their chickens and dogs are taken along