一夏至以初一春末已尽
[yī xià zhì yĭ chū yī chūn mò yĭ jĭn]
'From the First Day of Summer's Arrival, the End of Spring Has Already Arrived,' conveys the rapid passing from spring’s end straight into summer's start. It poignantly illustrates fleeting youth or changing times with seasonal shifts serving as metaphors for transitional periods in life.