The full-length novel "Time Has Not Paid", based on the principle of realism, truly reproduces the life, thoughts and life achievements of the 77-, 78-, and 79-level college students after the resumption of the college entrance examination. It profoundly reflects the social reality from 1975 to 2004, the love and marital entanglements between six young people and four marriages. The writing is true, vivid, tortuous, and sharp, and contains rich and profound social content and life knowledge. It is soul-stirring after reading. The novel convincingly and profoundly expresses the theme of "knowledge is power" by reproducing the fact that these ordinary people, through learning knowledge, improving their ability to make a living and civilized cultivation, realize their ideal life, harvest beautiful love, and train their children to attend key universities. The materials used in the novel should be as original and unique as possible from specific individual lives to ensure freshness. Practice is the only criterion for testing truth. Readers can know for sure by reading some chapters in the middle of the novel.