张珰 / Zhang Dang (late Han)

Overview

张珰 / Zhang Dang enters the wiki through Hanji 799 as the Dunhuang administrator who reverses his earlier capital-side opinion after seeing the frontier directly. He argues that abandoning the Western Regions would expose 河西四郡 and offers graded alternatives to simple closure of Yumen Pass and Yangguan.

Current Profile

In Hanji 799, Zhang Dang is the newly appointed Dunhuang administrator during Northern Xiongnu and Cheshi pressure against Hexi. The court has voices proposing that the Han should again close the western passes to cut off the trouble. Zhang Dang reports that he once held the same view in the capital, but frontier experience changed his judgment: if the Western Regions are abandoned, Hexi cannot stand by itself.

His memorial gives three options. The upper plan sends more than two thousand Jiuquan dependent troops to Kunlun Barrier, attacks the Northern Xiongnu Huyan king, and uses Shanshan forces to threaten Cheshi Hou from the rear. The middle plan creates a military sima with five hundred troops, supplied by the four Hexi commanderies, to garrison Liuzhong. The lower plan abandons Jiaohe city and pulls friendly Shanshan-linked populations inside the passes.

Key Characteristics

• Local frontier official whose judgment changes after direct exposure to Dunhuang conditions.
• Policy planner who treats the Western Regions as a buffer necessary to Hexi’s survival.
• Offers a ranked menu of action rather than a single maximal military demand.
• Links logistics, allied-polity pressure, and fallback population management in one frontier memo.
• Source-bounded figure currently known only through the 123 CE Western Regions debate.

Evidence

• Changed judgment: Hanji 799 says Zhang Dang had once favored abandoning the Western Regions but changed his view after arriving at Dunhuang.
• Buffer argument: Hanji 799 says Zhang argues that abandoning the Western Regions would leave Hexi unable to exist alone.
• Three plans: Hanji 799 records upper, middle, and lower proposals covering attack, garrisoning, and fallback relocation.

Qualifications

This page is bounded to Hanji 799. It does not reconstruct Zhang Dang’s full career, exact office chronology, later outcomes, or whether every element of his upper and lower plans was feasible. The source preserves him primarily as a frontier-situated policy witness.

What Changed

• Created Zhang Dang as the Dunhuang administrator whose three-plan memorial anchors the 123 CE Western Regions debate.

Relationships

• 陈忠 - court official who evaluates Zhang Dang’s memorial and pushes the anti-abandonment line that Emperor An accepts.
• 班勇 - commander appointed to Liuzhong after the debate sparked by Zhang Dang’s proposal.
• 河西四郡 - strategic region Zhang says cannot stand if the Western Regions are abandoned.
• 北匈奴 - frontier opponent targeted in Zhang Dang’s upper plan.
• 车师后王国 - Western Regions polity to be pressured from the rear in Zhang Dang’s upper plan.
• 弃边失屏 - concept modeled by Zhang Dang’s argument against treating the Western Regions as disposable.