For example, in the Northern and Southern Dynasties, Yan Yanzhi wrote the poem "Zhao Yingguan's Tian Shou in the North Lake": "Watching the wind for a long time makes Chen Shi ashamed." Wang Tangwei's "Warm Soup with Servants Shooting Servants": "There is nothing wrong with admonition, but it doesn't work." Source: One of Yu Dafu's poems "Conscription for Yoshida": "If you go to Liaoyang, hang a battlefield for me in Chen Shi."