Xuantu Commandery
In 82 BCE, the Han dynasty reduced its commandery units; Lintun Commandery merged with Xuantu as a result. In 75 BCE, the Xuantu Commandery was forced to moved its seat from Fort Okjeo (沃沮城) to Gaogouli County due to raids by the Maek tribes (貊), a likely reference to Gaogouli. As a result, some of its previous counties had now to be abandoned or reassigned, seven of which were subject to Lelang Commandery, the so-called "seven counties beyond the eastern pass" (嶺東七縣).