There is a poem by Chen Ziang, a poet in the Tang Dynasty, on the Youzhou rostrum. This is a sad song of life, from which we can see the poet's lonely feelings of being alone in the world. This poem expresses the poet's pent-up grief and indignation, profoundly reveals the depressed situation of those intellectuals in feudal society, and expresses their lonely and depressed mood when their ideals are shattered, which has profound typical social significance. The language of the whole poem is vigorous, infectious, compact and coherent, leaving a lot of room: the first two sentences are long; The third sentence is to look at the building and write a vast space; The fourth sentence depicts the poet's lonely and depressed mood in the vast space-time background, which is particularly touching, refreshing and lingering.