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concept Updated 2026-08-22 Tags: Strategy, Chu-Han, Guanzhong, Enfeoffment, Containment

Three Qin Containment / 三秦压制

Three Qin containment / 三秦压制 enters the wiki through Hanji 143 as 项羽 and 范增’s arrangement for constraining 刘邦 after the 鸿门宴 crisis. Instead of honoring the 怀王之约 by giving Liu Bang direct rule over 关中, Xiang Yu makes Liu Bang Han king in 巴蜀 and 汉中, with the capital at 南郑.

The containment layer is built from surrendered Qin commanders. 章邯 becomes Yong king west of Xianyang, 司马欣 becomes Sai king east of Xianyang toward the Yellow River, and 董翳 becomes Di king in the Shang commandery area. Together they make the Three Qin, a northern and eastern blocking system between Liu Bang’s assigned base and the old Qin heartland.

The device is politically double-edged. It rewards Qin elites who surrendered to Xiang Yu and gives them reason to defend their new positions, but it also advertises that Liu Bang’s first-entry merit has been neutralized through geography and title wording. This turns an apparent compromise into a likely future conflict point inside the broader 周秦混合制.

Hanji 144 adds the contained side’s response. 萧何 accepts that Liu Bang cannot break the containment through immediate battle, but reframes the assignment as a temporary base: govern 汉中 and 巴蜀, gather people and resources, and wait for a later opening toward 关中. The containment therefore creates both a lock and the conditions for 退让式根据地经营.

Hanji 147 gives the opening that Xiao He’s counsel had left implicit. In 汉中对, 韩信 argues that the Three Qin are not a stable Qin-core shield because Zhang Han, Sima Xin, and Dong Yi are precisely the men Guanzhong people resent: they led Qin’s sons through destructive campaigns, survived while common surrendered soldiers were killed at 新安坑降, and were then imposed as kings by Xiang Yu. The containment layer therefore becomes Liu Bang’s first exploitable weakness.

Hanji 148-1 shows the containment failing in operation. 韩信 combines army reform with layered feints and a central strike through 陈仓, defeating 章邯 and forcing him back toward Feiqiu. Once Zhang Han’s field position breaks, 司马欣 and 董翳 surrender, so the Three Qin cease to be a working barrier around 刘邦.

Key Claims

  • The Three Qin convert surrendered enemies into border guardians against a former ally.
  • The arrangement preserves a nominal claim that Liu Bang received part of the Guanzhong world, while operationally moving him into a constrained and difficult base.
  • The strategy answers the immediate Liu Bang threat without resolving the legitimacy problem created by the Huaiwang promise.
  • The Three Qin show how Xiang Yu’s settlement mixes reward, punishment, route control, and hostage-like geography.
  • Hanji 144 shows that containment can be reinterpreted by the constrained actor as a reason to preserve strength and build a base rather than attack immediately.
  • Hanji 147 shows that containment can fail politically before it fails militarily when the blocking rulers lack local legitimacy.
  • Hanji 148-1 shows the military collapse: once Zhang Han is pulled off balance and beaten at Chen Cang/Haozhi, the other two Qin kings surrender rather than preserve the containment layer.

Connections