"cover" radical in Chinese characters (Kangxi radical 14), occurring in 軍|军[jun1], 冠[guan1] etc, known as 禿寶蓋|秃宝盖[tu1 bao3 gai4] or 平寶蓋|平宝盖[ping2 bao3 gai4]
lit. someone else stole the donkey; you only pulled up the stake it was tethered to (idiom) / fig. you're the least culpable, but you're the one who gets the blame
lit. to see whether it's a mule or a horse, take it out for a walk (idiom) / fig. the proof of the pudding is in the eating / to show what one is made of