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concept Updated 2026-08-23 Topics: History

Transport Corridor Severance / 交通线切割

Transport corridor severance / 交通线切割 is the strategy pattern highlighted in 《资治通鉴·周纪》92丨历史上第一位著名舔狗是谁？（1）. 范雎’s advice to 秦昭襄王 is not framed as simple conquest. It targets roads, passes, and geographic seams that make 韩国 governable as one unit.

In the episode’s reconstruction, Qin pressure around Xingyang and Chenggao, the taking of 韩国南阳, and the attack on 太行道 would split Han into separated pieces. The immediate effect is that 上党 loses its route to Xinzheng, making local defection or surrender decisions more likely to drive the next war.

The concept extends 远交近攻 by explaining how “near attack” can work below the level of state destruction. Qin can weaken a neighbor by severing communication and support lines first, then absorb or pressure the isolated pieces in sequence.

《资治通鉴·周纪》93丨在梦里藏着偷天改命？（1） supplies the immediate political aftereffect. Once 上党 is cut off, 冯亭 tries to avoid Qin surrender by offering the territory to 赵国. The severed corridor therefore creates not just administrative failure for 韩国, but a windfall decision trap for the neighboring state asked to receive the isolated region.

《资治通鉴·周纪》93丨在梦里藏着偷天改命？（2） completes the mechanism: the isolated region is actually received by Zhao. 赵豹 / 平阳君 recognizes the transfer as “嫁祸,” but 平原君 supports acceptance and 赵丹 / 赵孝成王 formalizes the transfer through generous rewards. Corridor severance therefore becomes a cause chain from geography to diplomatic bait to the 长平之战 prelude.

《资治通鉴·周纪》94丨杀神白起，长平之战中的“草包”名将？（2） adds a battle-scale analogue. Once Zhao Kuo attacks, Bai Qi cuts the Zhao army away from its camp and food route, while Qin Zhaoxiang Wang mobilizes Henei to prevent relief. This does not replace the earlier regional corridor concept; it links it to 战场围困与断粮, where the severed route belongs to a trapped field army rather than an isolated territory.

Qinji 134 adds a siege-relief version at 巨鹿之战. Qin’s protected yongdao carries food from 敖仓 toward 王离’s army at 巨鹿, while 章邯 guards the broader supply system. 英布 and 蒲将军 break that corridor before Xiang Yu’s main attack, so severance now works against the besieger rather than against an exposed province or field army.

Hanji 156 part 1 adds a campaign-passage version. At 井陉口, 李左车 reads 韩信 and 张耳’s force as vulnerable because food trails behind a long army moving through a narrow route. His proposed side-path attack would sever the transport line before Han can choose a normal battle.

Hanji 159-1 adds the central-front version against Han. Chu captures 敖仓, controls Yellow River transport, and repeatedly attacks the Han food corridor around 荥阳相持. Here severance is not only a proposed tactic or pre-battle setup; it becomes the pressure that makes 刘邦 receptive to a bad political plan.

Hanji 162-1 adds a rear-harassment payoff against Chu. After 袁先生 / 袁生 draws 项羽 away from 荥阳 toward the Wan area, 彭越 cuts logistics around the 睢水. The corridor attack now works with fortified non-battle: Xiang Yu cannot force Liu Bang to fight in front, while his food line is threatened behind.

Hanji 162-2 adds the earlier Xiapi version of the same pressure. Peng Yue’s attack toward 下邳 threatens the river-linked route near 彭城, so Xiang Yu leaves 成皋 to answer the rear problem. This shows corridor severance as theater-shaping pressure even before the final food shortage: the route threat changes where the strongest enemy commander has to be.

Hanji 162-3 adds the reinforced version. 刘邦 sends 刘贾 and 卢绾 to support 彭越, after which Peng Yue captures Suiyang, Waihuang, and other points and burns Chu food and transport assets. At the same time, 郦食其 frames 敖仓 and 成皋 as the food-and-pass system Han must not abandon, making corridor control both a raiding tactic and a strategic counsel.

Hanji 163 shows the corridor pressure becoming immediate supply loss. 曹咎’s defeat at 汜水 gives Han back 成皋 and Aocang, so 项羽 returns from Liang to a front where Chu is short of food. Transport severance here is not just raiding pressure in the rear; it becomes loss of the grain hub that makes the Guangwu standoff unfavorable for Chu.

Key Claims

  • Route control can matter as much as city capture because it changes whether a state can reinforce, communicate with, or command an exposed region.
  • Cutting corridors turns one enemy state into multiple isolated operational problems.
  • A severed region may become politically unstable before it is formally conquered.
  • The mechanism links geography to diplomacy: once 上党 is isolated, its commander can seek 赵国 protection and widen the war.
  • Zhouji 93 adds that corridor severance can transfer risk outward: the isolated region may be offered as an apparent gift that imports the original attacker’s retaliation.
  • Zhouji 93 part 2 adds that once the recipient ceremonially accepts the severed region, the imported conflict becomes harder to unwind.
  • Zhouji 94 part 2 adds that the same logic can shrink to battle scale: cutting the army’s food route turns maneuver into starvation.
  • Qinji 134 adds that corridor severance can support siege relief: cutting the besieger’s protected food route can make direct battle winnable.
  • Hanji 156 adds that a narrow pass can make a moving army’s supply tail the corridor to cut, even before formal encirclement begins.
  • Hanji 159-1 adds that food-corridor pressure can distort political judgment, pushing a ruler toward risky legitimacy schemes when the front is starving.
  • Hanji 162-1 adds that a diversion can create the opening for corridor severance: the enemy commander is pulled toward one fortified front while irregular pressure attacks supply behind him.
  • Hanji 162-2 adds that corridor pressure can force a commander with superior tactical ability into repeated long movements, turning route harassment into strategic fatigue.
  • Hanji 162-3 adds that corridor pressure can be deliberately reinforced by sending regular support to an irregular rear-pressure actor, while the same logistics map becomes the basis for strategic advice about Aocang and Chenggao.

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