郑吉 / Zheng Ji (Western Han)

Overview

郑吉 / Zheng Ji is synthesized as a Western Han Western Regions official who turns屯田, allied local forces, garrisoning, escort, and local knowledge into durable authority. Hanji 422-1 adds the earliest current Cheshi layer: Zheng and Sima Xi use 渠犁 stores, pardoned convicts, and Western Regions troops to defeat 车师国, then leave a small屯田 administration after Wugui flees. Hanji 429 adds the later Cheshi rescue crisis, where Zheng leaves a small garrison after Cheshi’s submission and is surrounded when he leads Quli屯田 troops back to rescue it. Hanji 443 adds his later institutional founding layer: he receives Rizhu Wang Xianxianshan’s defection, escorts him safely to Chang’an, and is made the first protector over the Western Regions. Hanji 461 later shows that same office style in the Wusun crisis, where Zheng relieves Chigu City and sends 冯嫽 to persuade Wujiutu before full war begins.

Current Profile

The current evidence has four phases. Hanji 422-1 shows Zheng before the later “骄兵必败” crisis. Cheshi’s Wugui has aligned with 匈奴 and threatens the Han-Wusun route, so Zheng and Sima Xi attack from the Quli屯田 base. The victory demonstrates Zheng’s method: use stored grain, pardoned convicts, local Western Regions forces, and a small continuing屯田 presence rather than relying only on a large central army. It also shows the method’s limits, because Wugui flees to 乌孙, Xiongnu installs Dumo, and Han’s holding force remains thin.

Hanji 429 shows the same frontier problem returning. Cheshi’s submission gives Han a forward foothold, but Zheng’s three-hundred-man garrison is too small to hold against Xiongnu counterattack. When he brings seven or eight thousand Quli屯田 troops to rescue it, distance and enemy numbers leave him surrounded. Xuan’s limited response extracts Zheng and his men, and Zheng is then made Wei Sima responsible for Shanshan and the southwest-route security field.

Hanji 443 shows Zheng Ji at the founding edge of the protectorate. After Xiongnu succession conflict pushes Rizhu Wang Xianxianshan toward Han, Zheng mobilizes Quli and nearby groups, reportedly gathers fifty thousand people for the reception mission, and prevents desertion during the escort. Xuan rewards the defector as Gui De Hou and Zheng as Anyuan Hou, while the court makes Zheng responsible for the Western Regions north route and recognizes the protectorate office from this point.

Hanji 461 shows the office after it is already an active regional instrument. Zheng Ji appears when Xishenshou surrounds Chigu City after the failed assassination against Nimi. The episode says Zheng gathers cavalry from smaller Western Regions states to rescue 解忧公主 and the Han envoys. Xishenshou retreats after seeing the strength of Han-aligned forces.

His second role is more strategic. When Wujiutu claims the Wusun title and faces Han deployment, Zheng Ji chooses Feng Liao as the intermediary because she understands Han documents and Western Regions affairs, is respected by local states, and is connected by marriage to the Wusun right general. Zheng Ji therefore becomes the official who turns military readiness into a negotiated route before the crisis becomes open war.

Key Characteristics

• Western Han frontier official operating through the Western Regions protectorate field.
• Cheshi crisis officer whose Quli-based attack, small forward garrison, and later Quli rescue force expose both the utility and cost of holding contested oasis positions.
• Turns a major Xiongnu defection into escorted submission and institutional promotion.
• Coordinates regional cavalry to relieve the Chigu City siege after the failed Nimi assassination.
• Treats Wusun as a strategic hinge in Han-Xiongnu competition, not only as a local succession dispute.
• Uses Feng Liao’s personal authority and Wusun network as a diplomatic instrument.
• Combines coercive pressure with intermediary-based negotiation.

Evidence

Cheshi garrison and Quli force:

• Hanji 422-1 says Zheng Ji and Sima Xi lead pardoned convicts at Quli, accumulate grain, summon more than ten thousand Western Regions troops, and defeat Cheshi.
• Hanji 422-1 says Zheng Ji and Sima Xi move north to face Xiongnu pressure, after which Xiongnu forces do not advance.
• Hanji 422-1 says Han leaves only a small monitoring group near Wugui and later about three hundred officials and soldiers to屯田 and govern Cheshi.
• Hanji 429 says Zheng leaves three hundred soldiers at Cheshi after its submission.
• Hanji 429 says Zheng brings seven or eight thousand Quli屯田 troops to rescue Cheshi but is surrounded by Xiongnu.
• Hanji 429 says Chang Hui recovers Zheng and his troops, after which Zheng is made Wei Sima for the Shanshan-west south route.

Defection and protectorate founding:

• Hanji 443 says Rizhu Wang Xianxianshan contacts Zheng Ji from Quli and asks to submit to Han.
• Hanji 443 says Zheng mobilizes Quli and nearby groups for the escort mission and prevents escape during the journey to Chang’an.
• Hanji 443 says Zheng’s achievement leads to his Anyuan Hou title and to the protectorate office supervising Western Regions affairs.

Wusun crisis mediation:

• Hanji 461 says Zheng Ji gathers cavalry from Western Regions states to rescue Xieyou and the Han envoys when Chigu City is surrounded.
• Hanji 461 says Xishenshou flees after seeing that Han forces are numerous.
• Hanji 461 says Zheng Ji sends Feng Liao to persuade Wujiutu because of her Wusun and Western Regions ties.
• Hanji 461 says Han and Western Regions forces are already confronting Wujiutu when Feng Liao carries the warning.

Qualifications

This page does not reconstruct Zheng Ji’s complete office history, appointment chronology, wider protectorate administration, or later career. Hanji 422-1 and Hanji 429 supply two Cheshi layers but do not settle the full Cheshi geography, Wugui/Dumo chronology, Sima Xi’s career, or the later front/rear Cheshi terminology. Hanji 443 supplies the defection-and-founding layer but keeps Rizhu Wang’s broader biography and the protectorate’s exact bureaucratic mechanics source-scoped. Hanji 461 uses Zheng chiefly as the official who coordinates rescue and mediation in the Wusun crisis.

What Changed

• Added Hanji 422-1 as Zheng Ji’s earlier Cheshi layer: Quli屯田 stores, allied Western Regions troops, Wugui’s surrender and flight, hostage handling, and small屯田 administration.
• Preserved Hanji 429’s later Cheshi crisis layer: small garrison, Quli rescue force, Xiongnu encirclement, limited extraction, and Wei Sima appointment.
• Preserved Hanji 443’s founding layer and Hanji 461’s Chigu relief plus Feng Liao mediation branch as later operational layers.

Relationships

• 冯嫽 - intermediary Zheng Ji sends to persuade Wujiutu.
• 赵充国 - commander whose deterrent Xiongnu standoff precedes Zheng’s defection reception.
• 匈奴式继承碎裂 - succession conflict creates the defection opening Zheng converts into Han authority.
• 乌孙 - frontier polity whose succession crisis Zheng Ji manages.
• 西域都护府 - institutional field through which Zheng Ji operates.
• 车师国 and 渠犁 - earlier garrison and rescue field that exposes Western Regions holding costs.
• 解忧公主 - Han princess rescued from the Chigu City siege.
• 狂王泥靡 - Wusun ruler whose assassination crisis sets Zheng Ji’s intervention in motion.
• 实力支撑的外交名分 - related concept because Zheng Ji’s diplomacy works beside credible force.