圍城打援

wéichéngdǎyuán

lay siege to a city to annihilate the enemy relief force; besiege the enemy in order to strike at his reinforcements

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wei2 cheng2 da3 yuan2

to besiege and strike the relief force (idiom); strategy of surrounding a unit to entice the enemy to reinforce, then striking the new troops

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圍城打援|围城打援 [wéi chéng dǎ yuán] ► to besiege and strike the relief force (idiom); strategy of surrounding a unit to entice the enemy to reinforce, then striking the new troops