They say that the swallows will come again after they have gone, and the peach blossoms will still bloom after they have withered, but time is gone forever. So, young man in bright clothes and angry horse, can you cherish the time now? Can you sit down, drink a pot of herbal tea, and listen to me talk about the past times. (The content of this book does not have any adverse effects. If there are dangerous actions, please do not imitate them. Plagiarism is not allowed without consent. If you find plagiarism, report it directly.)