ㄋㄤˊnángㄓㄨㄥzhōngㄑㄩˇˋ

  1. 物品比喻得到東西非常容易三國演義·》:囊中取物直須降伏自然。」探囊」、探囊取物」。

as easy as reaching for it from a bag (idiom)​, in the bag, (as good as)​ in one's possession