聚沙成塔 [ㄐㄩˋ ㄕㄚ ㄔㄥˊ ㄊㄚˇ; ju4 sha1 cheng2 ta3] sand grains accumulate to make a tower a tower (idiom); by gathering small amounts one gets a huge quantity many a mickle makes a muckle ◄ ►