What do men mean by reading?

In the evening, under the light, I study until late at night. At five o'clock, when the rooster crows, I get up early to study. This morning is a good time for men to study. The whole poem: "Encouraging Learning" Yan Zhenqing lights up in the middle of the night, when a person is reading. Teenagers only know how to play, but don't know how to study hard. When they are old, they regret why they didn't know how to study hard when they were young. Yan Zhenqing (August 23, 709-784) was born in Lingya Linyi (now Linyi City, Shandong Province) and Jingzhao Wannian (now Xi City, Shaanxi Province). Yan Shigu V was a famous official, calligrapher and secretary supervisor in the Tang Dynasty. He was once a famous painter such as Sun and Situ. Yan Zhenqing's calligraphy is exquisite and good at it. Chu Suiliang, a beginner, studied under Zhang Xu and got his brushwork. Its regular script is dignified and majestic, and its running script is vigorous and powerful, which has created a "Yan style" regular script and has a great influence on later generations. Together with Zhao Mengfu, Liu Gongquan and Ou Yangxun, they are also called "four masters of regular script". Together with Liu Gongquan, they are called "Yan Liu" and "Yangu". He is also good at poetry, such as You, Ji, Wu, Ji, Lu Ji and Linchuan Ji, all of which have been lost. The Song people compiled Yan Ji.