乘高决水

Explanation: With the commanding terrain, crevasse water. Little effort analogy, the effect is large. 　　Source: Sima Guang Song "Words are the legacy of the first Shangdian Sapporo child," Your Majesty can do this sincerely ... ... after two days of government, such as wind Chuimao, determined by high water, you can do not work and success. "