慈乌反哺

Explanation: Ci care of their own; Chi Wu Wu a crow, according to legend can be nurturing mother; back feeding black child growing up, the title of food feeding mother. Metaphor of children to repay their parents upbringing. 　　Source: Yuan Anonymous "Xue bud mother recognized the" second hanging off the saying goes horse reins, show dogs have that grass, kick step middle of the street, Ci Wu feed. " 　　Examples: ~, A mother love. ★ Ying "strange war bird"