带砺山河

Explanation: Belt: belt she; grind: grindstone; Mountain: Tai; River: Yellow. Thin section of the Yellow River like a belt she, like a small block of Mount grindstone. Metaphor of the passage of time, any instability will never change of heart. 　　Source: "Historical Chronology of high Zugong Chen Hou were" knighted in the oath, saying 'the river, such as band, if the grind of Taishan, the country to Yongning, love and refuge. '"