《汉书·志·地理志上》
沾县，有大咀谷，清漳水从这裹流出，向东北到邑成流入黄河，经过五个郡，行程一千六百八十里。有冀州河。
沾，大黾谷，清漳水所出，东北至邑成入大河，过郡五，行千六百八十里，冀州川。
Zhan County, with Dajui Valley, the Qingzhang River flows out of here, to the northeast to Yicheng to flow into the Yellow River, passing through five counties, a journey of one thousand six hundred and eighty miles. With Jizhou River.
<s>[INST] Kindly elucidate the central themes in this passage in English: 沾，大黾谷，清漳水所出，东北至邑成入大河，过郡五，行千六百八十里，冀州川。 [/INST] Zhan County, with Dajui Valley, the Qingzhang River flows out of here, to the northeast to Yicheng to flow into the Yellow River, passing through five counties, a journey of one thousand six hundred and eighty miles. With Jizhou River.</s>
Kindly elucidate the central themes in this passage in English: 沾，大黾谷，清漳水所出，东北至邑成入大河，过郡五，行千六百八十里，冀州川。
user
Zhan County, with Dajui Valley, the Qingzhang River flows out of here, to the northeast to Yicheng to flow into the Yellow River, passing through five counties, a journey of one thousand six hundred and eighty miles. With Jizhou River.
assistant