ㄐㄩˋㄕㄚㄔㄥˊㄊㄚˇjùshā‑chéngtǎ

  1. 妙法記載即使小孩遊戲堆積泥沙成就功德比喻積少成多 聚沙成塔只要人人一點世界改變」。

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
Kleinvieh macht auch Mist