避实击虚（避實擊虚）　

◎ 避实击虚 bìshí-jīxū

(1) [stay clear of the enemy‘s main force and choose to attack the vulnerable spot] 躲开对方的实力,寻找其薄弱的方面予以打击

夫兵形象水,水之行避高而趋下,兵之形避实而击虚。——《孙子·虚实》

(2) 也说“避实就虚”