奇兵 [－－]

Jyutping kei4 bing1
Pinyin qí bīng

Definitions (CC-CEDICT)
  1. troops appearing suddenly (in a raid or ambush)
Definitions (Wiktionary)
  1. noun, archaic
    an army that tries to catch the enemy off guard by launching a surprise attack
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）