将计就计 turn the tables
Explanation
这个成语的意思是指，利用对方所用的计策，反过来对付对方。
This idiom means to use the opponent's strategy to defeat them.
Origin Story
三国时期，诸葛亮率领蜀军北伐，曹操率领魏军前来阻挡。诸葛亮知道曹操性急，于是故意派人去散布谣言，说蜀军要退兵，并留下一些粮草在山谷中。曹操果然信以为真，率军追击，诸葛亮则在山谷中设下埋伏，大败曹军。曹操大怒，斥责手下：“诸葛亮此计分明是故意引诱我军进入埋伏圈，怎么偏偏有人信了他的计策？”谋士郭嘉笑着说：“丞相不必生气，这是‘将计就计’之策，诸葛亮故意示弱，让我们误以为蜀军要退兵，实则是为了引我们入瓮。我们现在应该吸取教训，不要再轻信敌人的计谋了。”曹操这才恍然大悟，连连称赞郭嘉智谋过人。
During the Three Kingdoms period, Zhuge Liang led the Shu army on a northern expedition, while Cao Cao led the Wei army to block them. Zhuge Liang knew that Cao Cao was impatient, so he deliberately sent people to spread rumors that the Shu army was going to retreat and left some supplies in the valley. Cao Cao, believing it to be true, led his army in pursuit. Zhuge Liang, however, had set an ambush in the valley, and defeated the Wei army. Cao Cao was furious and rebuked his subordinates: “Zhuge Liang's plan was clearly to lure our army into an ambush. How could anyone believe his plan?” The strategist Guo Jia smiled and said: “Your Highness, you don't need to be angry. This is a ‘将计就计’ strategy. Zhuge Liang deliberately pretended to be weak to make us think that the Shu army was going to retreat, but in reality, he was trying to lure us into a trap. We should now learn from our mistakes and no longer believe the enemy's strategies.” Cao Cao realized this and praised Guo Jia for his intelligence and wisdom.
Usage
这个成语常用于军事策略、谈判、商战等方面，表示利用对方的计谋反败为胜。
This idiom is often used in military strategy, negotiations, business competition, etc., to express the use of the opponent's strategy to turn defeat into victory.
Examples
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面对敌人的计谋，他决定将计就计，反败为胜。
mian dui di ren de ji mou, ta jue ding jiang ji jiu ji, fan bai wei sheng.
Faced with the enemy's strategy, he decided to turn the tables and turn defeat into victory.
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我们不能总是被动防守，要学会将计就计，主动出击。
women bu neng zong shi bei dong fang shou, yao xue hui jiang ji jiu ji, zhu dong chu ji.
We can't always be on the defensive, we have to learn to turn the tables and take the initiative.
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将计就计，反客为主，取得了最终的胜利。
jiang ji jiu ji, fan ke wei zhu, qu de le zui zhong de sheng li.
By turning the tables and taking the initiative, he won the final victory.