The second line of Paul's song of life should be: I want to continue to sing the song of the future. In the second half of the couplet, the phrase "the sun is setting and the road is far away" expressed the confusion of life and the uncertainty of the future, while the phrase "I want to continue" expressed the protagonist's determination and perseverance to continue fighting. It implied that even in the face of difficulties and setbacks, one must move forward firmly and not give up hope and the future. It echoed with the "physically disabled and mentally strong" in the first half of the couplet, expressing the protagonist Paul's fearless, indomitable spirit and his love and pursuit of life.