观衅伺隙
guān xìn sì xì
lit. to look for holes, and observe gaps (idiom)
fig. to search out one's opponent's weak points; to look for the Achilles' heel
guān xìn sì xì
lit. to look for holes, and observe gaps (idiom)
fig. to search out one's opponent's weak points; to look for the Achilles' heel