河山带砺

Explanation: 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. 　　Usage: The main predicate; as predicate; metaphor long time 　　Source: Qian Han, "Historical Chronology of high Zugong Chen Hou who order": "knighted Oath reads: 'the river, such as band, if Li Taishan. States to Yongning ruling Article and refuge.'"