[xíng gū jì mìng]   

讬    孤    寄    命    指受遗命托付辅助幼君；或君主居丧时，受命摄理朝政。亦泛指付托以常之重任。

指受遗命托付辅助幼君；或君主居丧时，受命摄理朝政。亦泛指付托以常之重任

Entrust to another's care the children one is about to leave behind as orphans

讬孤寄命