袖里乾坤 Sleeve-hidden universe
Explanation
比喻不可思议的本领，也指手法隐秘、变化莫测的戏法。
A metaphor for incredible skill, also refers to magic tricks with hidden and unpredictable methods.
Origin Story
话说唐朝时期，有一位名叫李靖的将军，他不仅武功高强，而且足智多谋。一次，他奉命率兵平定叛乱，遇到了一支实力强大的叛军。叛军首领是个法术高强的术士，他凭借着各种奇异的法术，使得李靖的军队屡战屡败。李靖心中焦急，但他并没有灰心。他仔细研究叛军的作战方式，发现叛军经常使用一些难以捉摸的幻术迷惑士兵。于是，李靖便暗中请教一位高人，学习了一些奇特的法术。经过一段时间的刻苦练习，李靖掌握了“袖里乾坤”的绝技。在接下来的战斗中，李靖不仅能够轻松化解叛军的幻术，还能够利用“袖里乾坤”的妙招，出其不意地击败敌人。最终，李靖带领军队取得了胜利，平定了叛乱，而这其中的关键就在于他掌握了高超的“袖里乾坤”之术。
In the Tang Dynasty, there was a general named Li Jing who was not only a skilled warrior but also a brilliant strategist. Once, he was ordered to lead his troops to quell a rebellion, encountering a powerful rebel army. The rebel leader was a highly skilled sorcerer, using various magical spells that led Li Jing's army to repeated defeats. Li Jing was anxious but not discouraged. He carefully studied the rebels' combat methods and discovered that they often used elusive illusions to confuse the soldiers. Li Jing secretly sought guidance from a master to learn some unique magic spells. After a period of intense practice, Li Jing mastered the unique skill of "sleeve-hidden universe." In the subsequent battles, Li Jing could easily resolve the rebels' illusions and use the magic of "sleeve-hidden universe" to defeat the enemy unexpectedly. Finally, Li Jing led his troops to victory, quelling the rebellion, and the key to this success was his mastery of the superb art of "sleeve-hidden universe."
Usage
多用于书面语，形容手法隐秘，变化莫测。
Mostly used in written language to describe secretive and unpredictable methods.
Examples
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他变戏法的手法真是袖里乾坤，让人叹为观止。
ta bian xifa de shoufa zhen shi xiu li qian kun, rang ren tan wei guan zhi
His magic tricks were truly amazing, a real 'sleeve-hidden universe'.
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这魔术师的表演，简直就是袖里乾坤，充满了神奇
zhe moshushi de biaoyan, jian zhi jiushi xiu li qian kun, chongman le shenqi
The magician's performance was a 'sleeve-hidden universe', full of wonder and mystery