贞下起元

Explanation: Personnel to represent the cycle of Heaven, Zhou endless stream. 　　Source: "Easy to do," Yuanhenglizhen. "Note Yuanhenglizhen Shang Bing, the seasons, the truck, from Hang Yuan Zhen Zhen against Li Kan, demand cycles, no te not poor." 　　Examples: A wholeness, a good text, ~, like a ring without, later writers, the chest of the original non-free gas, how to this. ★ Ming Li Zhi, "The Analects of Confucius Zaihan four book reviews"