《汉书·志·地理志上》
酆水从它东南流出，还有淆水，都在北面经过上林苑流入渭水。
酆水出东南，又有潏水，皆北过上林苑入渭。
The Feng River flows out of its southeast corner, and the Xiaoxi River also passes through Shanglin Garden in the north and empties into the Wei River.