In fact, the tradition of adoption from siblings in Chinese society is rather similar to this arrangement. It generally involves a couple adopting a son from a brother or sister of one of them, to carry on their family line if they have no sons.
其實，中國社會中的「過繼」，便類似這樣的安排，通常是收養夫妻雙方兄弟姊妹的兒子去承繼原本無子父系的「香火」；猶太教也有為兄弟留「後」的觀念。