各个击破 defeat one by one
Explanation
各个击破，意思是各个击破，逐个消灭敌人。也比喻将问题逐个解决。
To defeat one by one means to defeat and eliminate enemies one by one. It can also be used to solve problems one by one.
Origin Story
话说三国时期，蜀国大将诸葛亮率军北伐，面对曹魏强大的兵力，他并没有采取正面硬碰硬的策略，而是决定采取各个击破的战术。他首先派兵攻打魏国的战略要地——街亭，以此牵制魏军的兵力。与此同时，诸葛亮亲自率领主力军队，绕道攻打魏国的另一个重要据点——祁山。魏军由于兵力分散，难以有效应对，结果街亭失守，祁山也被攻克。魏军大败，蜀军取得了北伐的初步胜利。诸葛亮的各个击破战术，充分体现了他的军事才能和战略眼光，也为后世留下了宝贵的军事经验。
During the Three Kingdoms period, Zhuge Liang, a Shu general, led his troops on a Northern Expedition. Facing the powerful forces of Cao Wei, he did not adopt the strategy of a direct confrontation, but decided to adopt the tactic of defeating them one by one. He first sent troops to attack the strategic location of Jie Ting in Wei, in order to tie up Wei's forces. At the same time, Zhuge Liang personally led the main army to attack another important base of Wei - Qishan. Because Wei's forces were scattered, they could not effectively respond, resulting in the loss of Jie Ting and Qishan. The Wei army suffered a major defeat, and the Shu army achieved an initial victory in the Northern Expedition. Zhuge Liang's tactic of defeating them one by one fully demonstrated his military talent and strategic vision, and also left valuable military experience for posterity.
Usage
主要用于军事领域，也用于比喻解决问题。作谓语、宾语。
Mainly used in the military field, but also used metaphorically to solve problems. As a predicate, object.
Examples
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面对强大的敌人，我们采取各个击破的策略，最终取得了胜利。
miàn duì qiángdà de dírén, wǒmen cǎiqǔ gège jīpò de cèlüè, zuìzhōng qǔdé le shènglì.
Facing a powerful enemy, we adopted the strategy of defeating them one by one, and finally won the victory.
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公司面临多重挑战，管理层决定各个击破，逐一解决问题。
gōngsī miànlín duōchóng tiǎozhàn, guǎnlǐcéng juédìng gège jīpò, zhú yī jiějué wèntí
The company faces multiple challenges, and management has decided to solve the problems one by one.