提纲挈领 to grasp the essentials
Explanation
比喻抓住主要方面，简明扼要。
It means to grasp the main points, concise and to the point.
Origin Story
话说唐朝时期，一位名叫李白的著名诗人，受皇帝之邀进宫作诗。宫廷诗人，惯于堆砌华丽辞藻，歌功颂德。李白却反其道而行之，他写下了气势磅礴的《将进酒》。这首诗没有长篇累牍地描写宫廷的奢华，而是以“君不见黄河之水天上来，奔流到海不复回”起笔，以“人生得意须尽欢，莫使金樽空对月”为核心，提纲挈领，将人生的豪迈与无奈，尽显其中。这首诗，简练而又深刻，深受皇帝的喜爱。之后，其他诗人纷纷效仿李白的风格，提纲挈领，避免了词藻的堆砌，推动了唐诗发展。
During the Tang Dynasty, Li Bai, a renowned poet, was invited to the palace to write poems. Court poets often used flowery language to praise the emperor's achievements. Li Bai did the opposite, writing the magnificent poem
Usage
用于描写文章、讲话等简明扼要，抓住重点。
Used to describe articles, speeches, etc., that are concise and to the point, emphasizing the key points.
Examples
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他的总结提纲挈领，抓住要点，非常到位。
tade zongjie tigang qieliling, zhua zhu yadian, feichang daowei.
His summary was concise and to the point.
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这篇论文提纲挈领，论证清晰。
zhepian lunwen tigang qieliling, lunzheng qingxi
The paper is concise and well-argued.