This sentence comes from Mianchi Zihe written by Su Shi in the Song Dynasty.
Su Shi, whose word Zi Zhan, whose word Zhong Zhong, is called Dongpo lay man. Meishan, Meizhou, Luancheng, Hebei, a famous writer, calligrapher and painter in the Northern Song Dynasty.
In the sixth year of the Northern Song Dynasty, Su Shi went to Shaanxi and passed Mianchi. My younger brother Su Zhe, unable to send brotherly affection, wrote a song "Huai Mianchi sends his son to show off" as a gift. This poem is the author's harmony poem. This poem expresses the uncertainty of life and deep attachment to the past. The whole poem runs through in one breath, curled freely, unparalleled, scattered as a whole and written naturally. Comparing life with slush and claws makes people feel sorry at the beginning, which is thought-provoking and fascinating. Life experiences are accidental, so we should treat life with a natural attitude.
If so, nostalgia can be less sentimental and life can be less troublesome. Su Shi's outlook on life is like this, and so is his deep meaning of encouraging and caring for his younger brother. This philosophy of life is in line with the common destiny of ancient literati and can relieve their troubles, so it has spread widely and lasted for a long time.