买臣覆水

Explanation: Cover: splash. Metaphors do a foregone conclusion, can not be undone. 　　Source: According to legend, Han Zhu Maichen poor and lowly, his wife away, Hilltop, after his wife returned, Zhu Maichen splashing water on the ground, so his wife back. 　　Examples: Today, suddenly every intention to, though not a relative, such as feelings of thirst, but the sad sense of loss there ~. ★ Qing Li Luyuan "Qiludeng" Seventy-back