Duan Gui 段規 was an advisor to Han Kangzi 韓康子, the later king of Han 韓. When the three nobles of Han, Wei 魏 and Zhao 趙 divided the territory of their lord, the duke of Jin 晉, Duan Gui urged Han Kangzi to occupy the important place of Chenggao 成皋. This place would be an excellent base of operations for later conflicts.