This sentence comes from Drumming in the Book of Songs, the first poetry collection in China, and this poem is a war poem, which mainly expresses the feelings of comrades-in-arms on the battlefield, the helplessness of soldiers guarding the border and their deep yearning for their hometown.
The original words of this sentence are: "Life and death are rich, Zi Cheng said. Hold your hand and grow old with your son. " This sentence is a word of encouragement for two soldiers on the battlefield. The main meaning is: we are good brothers who fought on the battlefield, and we swear together that we will live and die together on the battlefield. I am willing to hold your hand and die together on the battlefield.