趁火打劫/Chen Huo Da Jie – Loot a Burning House
Original Text: When the enemy is in great trouble take advantage of the situation to profit. Surely, the hard will break the soft.
Analysis: When the enemy is suffering a calamity you should take the opportunity to attack & seize victory. This is exactly what it means to seize the opportunity in battle, use strength to attack weakness, subduing the enemy & controling victory tactically.