《新唐书·列传·卷九十一》
估量它的自然条件和资源，让它与河南相等，一般还要强十分之一二。所以它的人民沉雄勇猛，多才体壮，重许诺守信用，能吃苦耐劳。
程其水土，与河南等，常重十三，故其人沈鸷多材力，重许可，能辛苦。
Based on its natural conditions and resources, it was on par with Henan, and usually slightly better. Therefore, its people were brave and strong, talented and robust, kept their promise and had good credit, and were capable of bearing hardships.