《周书·列传·卷四十九》
另外还有五方：中方称为古沙城，东方称为得安城，南方称为久知下城，西方称为刀先城，北方称为熊津城。
其外更有五方：中方曰古沙城，东方曰得安城，南方曰久知下城，西方曰刀先城，北方曰熊津城。
There were also five other castles: Gosagyeong (Central Castle), Deangun Castle (East Castle), Gugijogyeong (South Castle), Doejeon Castle (West Castle), and Xiongjin Castle (North Castle).