徐干 / Xu Gan (Eastern Han)

Overview

Xu Gan is a Pingling man who volunteers to reinforce Ban Chao in the Western Regions under Emperor Zhang. Hanji 750 makes him a small-force support figure in Ban Chao’s proxy strategy, while Hanji 753 had previously preserved him only as a source-scoped associate in the Western Regions network.

Current Profile

Xu Gan enters the wiki as a volunteer rather than as an already powerful frontier commander. After Ban Chao argues that Qiuci and its dependents can be handled through hostage kingship, local polities, and limited Han support, Xu Gan offers himself for the mission. Emperor Zhang appoints him acting sima and sends him west with about one thousand released prisoners and volunteer soldiers.

His first clear action is operational support at Shule. When Shache has shifted toward Qiuci and Shule commandant Pan Chen rebels, Xu Gan reaches the region and joins Ban Chao in attacking Pan Chen, killing more than one thousand rebels in the source account. His importance is therefore tactical and connective: he gives Ban Chao enough outside support to stabilize a local crisis without turning the campaign into a large imperial army deployment.

Key Characteristics

• He is a volunteer reinforcement from Pingling rather than a court-heavy frontier magnate.
• His appointment translates Zhangdi’s approval of Ban Chao’s memorial into a limited expeditionary support package.
• He leads a mixed force of released prisoners and volunteers, showing low-cost mobilization.
• He joins Ban Chao in suppressing Pan Chen’s Shule rebellion.
• His profile is still narrow and source-bound, with little evidence beyond the Western Regions mission.

Evidence

• Volunteer and appointment: Hanji 750 says Xu Gan volunteers to support Ban Chao and is appointed acting sima with about one thousand released prisoners and volunteer soldiers.
• Shule operation: Hanji 750 has Xu Gan arrive before Ban Chao attacks Pan Chen and kills over one thousand rebels.
• Earlier wiki footprint: Hanji 753 already linked Xu Gan to Ban Chao’s Western Regions theater but did not provide a standalone profile.

Qualifications

The current profile does not establish Xu Gan’s broader biography, later career, or exact formal title beyond the episode’s acting-sima appointment. His relationship to later Western Regions developments remains source-scoped unless additional episodes add evidence.

What Changed

• Created a dedicated page for Xu Gan from the Hanji 750 support-force account.
• Integrated the earlier Hanji 753 source-scoped mention into a bounded profile.

Relationships

• 班超 / Ban Chao (Eastern Han) - commander whom Xu Gan volunteers to reinforce.
• 汉章帝 / Emperor Zhang of Han - appoints Xu Gan and authorizes the limited support force.
• 龟兹 / Qiuci Kingdom - strategic target in the campaign context that sends Xu Gan west.
• 疏勒 / Shule Kingdom - operating area where Xu Gan helps suppress Pan Chen’s rebellion.
• 以夷攻夷式边疆策略 / Frontier Proxy Conquest Strategy - Xu Gan supplies the limited Han-force component within Ban Chao’s proxy strategy.