《后汉书·列传·东夷列传》
后来遭夷貊侵犯，将玄菟郡迁到高句骊的西北方向，而将沃沮改为县，属乐浪东部都尉管辖。
后为夷貊所侵，徙郡于高句骊西北，更以沃沮为县，属乐浪东部都尉。
During the later period, due to the invasion by savage foreigners, Xuantu country was relocated to the northwest of Goguryeo, while Woju was changed to a county under the jurisdiction of Lelang’s eastern lieutenant colonel.