雪泥鴻爪 [ㄒㄩㄝˇ ㄋㄧˊ ㄏㄨㄥˊ ㄓㄠˇ; xue3 ni2 hong2 zhao3] a goose's footprint in the snow vestiges of the past (idiom) the fleeting nature of human life (idiom) ◄ ►