日月经天，江河行地

Explanation: Daily through the sky the sun and the moon, rivers will always flow through the earth. Metaphor of the eternal people or things, great. 　　Usage: Complex sentence; as object clause; can be used separately 　　Source: Fan Ye Southern Song "on the bounty of the Later Han Feng": "being to Visible, Day menstrual days, River kelp, the not over." 　　Examples: Give an example of the Six Classics, still flies the sound ear, Qide is ~ zai. (Qing Zheng Xie, "Do not peak mte Temple in the rain without incident book to send my brother ink")