《晋书·志·第四章》
冀业地势有些地方险峻，有些地方平坦，历代帝王多有在这裹建都的，天下纷乱而冀州安宁，天下贫弱而冀业强盛，天下遭逢灾荒而冀州五谷丰登。
其地有险有易，帝王所都，则冀安，弱则冀强，荒则冀丰。
The terrain of Jiye is a mixture of steep and flat areas, and many emperors throughout the ages have established their capitals here. When the world is in chaos, Jizhou is peaceful; when the world is poor and weak, Jiye is strong; when the world suffers from famine, Jizhou has a bountiful harvest.