《魏书·列传·卷七》
湖周围四百多里，束关汇合长江的地方，宽不过几十步，如果贼寇的计谋得逞，大湖灌注，淮水以南的各据点就一定与晋阳的事相同了。
湖周回四百余里，东关合江之际，广不过数十步，若贼计得成，大湖倾注者，则淮南诸戍必同晋阳之事矣。
The lake circumference is over four hundred li, the place where Shuguan meets the Yangtze is not more than tens of bu wide, if the rebel's plan succeeds, the great lake will flood and all the strongholds south of Huai River will be the same as what happened in Jinyang.