釜底抽薪 (fǔdǐ-chōuxīn)

1. 把柴火從鍋底抽掉。比喻從根本上解決問題。軍事上是指從根本上打敗敵人的謀略 take away the firewood from under the cauldron;(fig) take a drastic measure to deal with a situation
   • 如今有個道理,是“釜底抽薪”之法?！濉?吳敬梓《儒林外史》