著名书法家颜真卿写有一首留芳千古的《劝学》:“三更灯火五更鸡,真是男儿读书时。黑发不知勤学早,白首方悔读书迟。”他劝诫人们要勤奋学习,不要错过读书的好时光。田园诗人陶渊明的《杂诗》:“盛年不再来,一日难 The famous calligrapher Yan Zhenqing wrote a book entitled “Encouragement” that stayed in the ancient ages: “When Sanyen lights up the chicken, it’s really when the man is studying. The black-haired doesn’t know how to study. The white leader regrets that it is late.” He exhorted people to study hard. Don’t miss a good time reading. Idyllic poet Tao Yuanming’s Miscellaneous Poetry: "No longer coming in the new year, it’s difficult in a day