Going around for another year, there is no youth, only the ups and downs left by the years. What is it?

This sentence expresses the passage of time and the change of life, emphasizing the imprint left by years and the bitterness of experience. Chinese New Year refers to a wonderful time, which is used here to describe youth and the passing of youth. The bitterness and sweetness left behind represent all kinds of experiences, including laughter and tears, setbacks and successes. This sentence implies that life is not perfect, but the hardships and joys experienced are precious wealth, which makes people cherish time and life more.