坚壁清野

Explanation: Invasion against a powerful enemy into a method. Both attack the enemy no less than base, and not grab supplies. 　　Usage: Joint type; as the predicate attribute, clause; for military 　　Source: Jin Chenshou "Three Kingdoms Wei Zhi Xun Yu Chuan": "East have switched this collection of wheat, will be invading to be the enemy, the generals not to pull out the attack, the road of no gain, and within ten days, the hundreds of thousands of public not solid ears from fighting. " 　　Examples: Not allowed to play, but ~, to be the best dry food Zeikou relaxation, before chasing him. (Qing Chen Chen, "Water Margin after the transfer," the twenty-first back) Thesaurus:  leave nothing usable to the invading enemy