idiom · the literal phenomenon where a person attaining immortality brings their pets and followers to heaven with them

传说淮南王刘安成仙时，不仅全家成仙，连鸡犬升天。

idiom · when someone gains power and their relatives or associates benefit or gain influence through their connection

他一当上经理，那些平时不学无术的亲戚也跟着鸡犬升天，进了公司。