"I left a crack in the glass and it gave me a rainbow" is a poem, which is usually used to describe seeing hope and beauty in adversity. The meaning of this poem can be understood as that even if only a gap is left, the mind can still feel the beautiful rainbow. This poem expresses a positive attitude, that is, to remain optimistic in the face of difficulties and challenges. Even if there is only a little hope, we should try our best to find and cherish it. Rainbow is a beautiful natural phenomenon, which is usually regarded as a symbol of hope and happiness. The rainbow in the poem can be interpreted as a symbolic reward, that is, as long as we keep a positive attitude and work hard, we may get good results.