燕子銜泥壘大窩 [ㄧㄢˋ ˙ㄗ ㄒㄧㄢˊ ㄋㄧˊ ㄌㄟˇ ㄉㄚˋ ㄨㄛ; yan4 zi5 xian2 ni2 lei3 da4 wo1] the swallow's nest is built one beakful of mud at a time (idiom) many a little makes a mickle ◄ ►