-"Songs of the South, Nine Songs, Xiang Jun"

Yan Zhitui's Family Instructions for Yan Family in the Northern Qi Dynasty: "Loyal ministers are partial to the Lord and abandon their relatives, while dutiful sons forget their country and go their own ways.

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Yan Zhitui in the Northern Qi Dynasty wrote "Yan Family Health Training": "If you are sincere and filial, you will see a thief; Righteousness is offensive; If you lose your family, you will help the country. A gentleman doesn't blame you.

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In the poem "A Gift to Xiao Yu" written by Emperor Taizong, "The wind is high and the grass is strong, and the board swings to know the sincerity of the minister.

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