《资治通鉴·陈纪·陈纪六》
对方如果派军队来增援，我们可以坚壁清野，等他们远去以后，重又出兵。
彼若兴师赴援，我则坚壁清野，待其去远，还复出师。
If the other party sends troops to reinforce the battle, we can hold out and wait for them to go far away, and then send out troops again.