concept Updated 2026-08-19 Tags: Strategy, Warfare, Pre-Qin-History, Warring-States

Encircling Wei to Rescue Zhao / 围魏救赵

Encircling Wei to rescue Zhao / 围魏救赵 is the strategy pattern 《资治通鉴·周纪》16丨孙膑庞涓恩怨纠葛 桂陵之战 draws from 孙膑’s advice to 田忌. 魏国 is attacking 赵国 at 邯郸, but Sun Bin rejects a direct rescue march and tells 齐国 to attack 大梁 instead.

The concept’s core is pressure displacement. A rescuer can change the war by threatening what the aggressor must protect, forcing the enemy to abandon its chosen battlefield and move into a prepared response. In the source, that move leads to 桂陵之战.

Key Claims

  • The relevant target is not always the place where the ally is suffering.
  • Attacking the enemy’s must-save point can turn passive rescue into active control of tempo.
  • The strategy depends on reading what the enemy cannot politically or militarily ignore.
  • The source pairs the pattern with 田忌赛马: both accept local asymmetry in order to win the larger contest.

Connections