《明史·志·卷六十三》
这在洳河下游，水流平稳河床宽广，运输船只每日行驶仅仅十里。
此在泇下流，水平身广，运舟日行仅十里。
This is in the downstream of the Ru River, where the water flow is smooth and the riverbed is wide, and the transportation ships travel only ten miles a day.