概莫能外 everyone without exception
Explanation
概莫能外，意思是一概不能例外，指所有的人都包括在内。这个成语强调了某种情况的普遍性和必然性，通常用来形容某种规则、制度或现象的普遍适用性。
Gài mò néng wài means that there are no exceptions and everyone is included. This idiom emphasizes the universality and necessity of a certain situation and is often used to describe the general applicability of a certain rule, institution, or phenomenon.
Origin Story
唐朝时期，有一位名叫李白的诗人，他写诗才华横溢，名满天下。有一天，他来到一个村庄，村民们听说大诗人来了，都纷纷前来拜访。李白与村民们畅谈诗歌，谈笑风生，气氛十分融洽。当谈到诗歌创作的技巧时，李白说道："诗歌创作，无论形式还是内容，都需要精益求精，概莫能外。"村民们听了，都深以为然，表示受益匪浅。从此以后，村民们更加努力学习，力求在诗歌创作上有所突破。
During the Tang Dynasty, there was a poet named Li Bai, whose poetic talent was unparalleled, and whose reputation filled the entire land. One day, he came to a village, and when the villagers heard that the great poet had arrived, they flocked to visit him. Li Bai chatted with the villagers about poetry, laughing and joking, and the atmosphere was very pleasant. When they talked about the techniques of poetry writing, Li Bai said, "Poetry writing, regardless of form or content, requires the pursuit of perfection, without exception." The villagers were convinced and said they had learned a lot. From then on, the villagers worked harder to learn and strived for breakthroughs in poetry writing.
Usage
概莫能外通常用作谓语，表示所有的情况都包括在内，没有例外。
Gài mò néng wài is usually used as a predicate, indicating that all cases are included, without exception.
Examples
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这次考试，没有一个人能逃脱，概莫能外。
zhe ci kao shi, mei you yi ge ren neng tao tuo, gai mo neng wai
No one could escape this exam; it applied to everyone without exception..