麻雀虽小，肝胆俱全麻雀虽小，五脏俱全má què suī xiǎo , gān dǎn jù quán
sparrow may be small but it has all the vital organs—small but complete ❍ 不要把所有的麻雀统统捉来解剖，然后才证明：“～。”(《毛泽东选集》Ⅴ—206) You don’t have to catch all the sparrows and dissect them before you can prove the fact that “small as it is,the sparrow has all the vital organs.”