2. "The surplus and contraction period is not only in the sky; The blessing that nourishes grace can last forever. " Expressing the author's view on life is quite dialectical. "Surplus and contraction" refers to the length of life, "nurturing" and "nurturing" refers to material recuperation; Elegance refers to spiritual pleasure. People's life will come to an end, but the length of life is different. It is not only determined by heaven, not by fate, but by everyone himself. If we pay attention to both material maintenance and proper mental adjustment, we can prolong life. The poet talks about the way of keeping in good health here, which contains profound philosophy. Human life is limited, and limited life can be extended.