The night light and the poem of the chicken.

The whole poem goes like this: the light is on at five o'clock in the middle of the night, which is when men are 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.

The meaning of this poem is: reading at night while burning the midnight oil, crowing at night, this morning and night are the best time for boys to study. When I was a teenager, I only knew how to play and didn't know how to study hard. When I was old, I regretted why I didn't know how to study hard when I was young.

The purpose of this poem is to encourage young people to cherish their youth, study hard and make a difference, otherwise it will be too late to regret.

The source of this poem is: Yan Zhenqing's poem.

The author of this poem is: Yan Zhenqing (709-784), a famous official and calligrapher in the Tang Dynasty, who is also called "four masters of regular script" with Zhao Mengfu, Liu Gongquan and Ou Yangxun.