汉四郡 / Four Commanderies of Han

Definition

汉四郡 / Four Commanderies of Han names the episode’s administrative conversion of conquered 卫氏朝鲜 into Lelang, Lintun, Xuantu, and Zhenfan commanderies.

Current Synthesis

Hanji 366-2 presents the four commanderies as the institutional endpoint of a campaign that first has to overcome divided Han command, court defections, 卫右渠’s death, and continued resistance at 王险城. The sequence distinguishes military victory from administrative incorporation: arresting one Han commander enables a unified assault, but the polity still collapses through a combination of force, elite switching, internal killing, persuasion, rewards, punishment, and territorial reorganization.

The commanderies should not be treated as a single timeless regional fact. The source names their creation but does not establish their exact boundaries, later contraction, institutional depth, demographic effects, or the degree of immediate control across all claimed territory.

Key Claims

• The four-commandery settlement follows conquest and regime collapse rather than merely renaming an unchanged polity.
• Commandery creation converts a military outcome into a claim of regular imperial administration.
• Elite defection and reward are part of the transition mechanism alongside battlefield force.
• Punishment of Han commanders shows that victory does not erase metropolitan review of how conquest was achieved.
• The episode establishes the initial four names but not a complete map or stable long-term administrative history.

Evidence

• Conquest sequence: Hanji 366-2 traces unified attack, elite defection, Ugeo’s death, final resistance, and capitulation.
• Administrative endpoint: Hanji 366-2 names Lelang, Lintun, Xuantu, and Zhenfan as the four commanderies established after victory.
• Accountability around conquest: Hanji 366-2 records rewards for defectors and severe punishment for Xun Zhi and Yang Pu.

Counterevidence & Qualifications

The source is a short narrative summary, not an archaeological or administrative study. It does not settle the commanderies’ locations, effective reach, local continuity, later chronology, or the contested political meanings attached to them. The claim that Joseon had been Yan territory since the Spring and Autumn period is not required for the administrative synthesis and remains unadopted.

What Changed

• Established the four commanderies as an administrative-conquest transition with explicit evidence limits.

Related Concepts

• 卫氏朝鲜 - predecessor polity defeated before the commanderies are established.
• 王险城 - final siege center whose fall precedes administrative reorganization.
• 郡县制的反分封逻辑 - broader imperial form into which conquered territory is incorporated.
• 征服后的郡县化转型 - general relationship between battlefield victory and commandery rule.
• 军令同步失灵 - campaign failure that delays the conquest preceding reorganization.