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.
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.
Connections
- 范雎, 秦昭襄王, 白起, and 秦国 - strategist, ruler, commander, and state using the method.
- 韩国, 韩国南阳, 太行道, and 上党 - target state and geographic pieces.
- 远交近攻, 秦国东进压力, and 战略纵深防御 - adjacent strategic and geographic frames.
- 冯亭, 赵丹 / 赵孝成王, 赵豹 / 平阳君, and 无故之利 / 利令智昏 - Zhouji 93 political consequence of the severed Shangdang corridor.
- 平原君 and 长平之战 - acceptance agent and downstream war prelude in Zhouji 93 part 2.
- 战场围困与断粮, 赵括, and 秦昭襄王 - battle-scale severance and state mobilization in Zhouji 94 part 2.