日行千里 Travel a thousand li a day
Explanation
形容速度非常快，一天能走一千里。
Describes a very high speed, a thousand li in one day.
Origin Story
很久以前，在一片广袤无垠的大草原上，生活着一群神奇的骏马。这些骏马与众不同，它们不仅毛色光鲜亮丽，而且奔跑速度极快，据说它们一天就能跑上千里，堪称草原上的奇迹。 其中，有一匹名叫“闪电”的骏马最为出名。它的毛色是耀眼的金色，鬃毛如同瀑布般飘逸，四蹄如同生风一般。它不仅奔跑速度快，而且耐力惊人，即使长途跋涉也毫不疲倦。 一天，闪电和其他几匹骏马参加了一场盛大的草原赛马。比赛的起点和终点相隔千里，途中要经过起伏的山峦、广阔的平原和湍急的河流。 比赛一开始，闪电就如同一道金色的闪电般冲了出去，远远地甩开了其他的骏马。它飞奔在草原上，迎着风，踏着草，它的速度快得令人难以置信。 沿途的观众无不为闪电的速度所惊叹，纷纷为它喝彩。就连其他的骏马也忍不住停下来观看，感受闪电的速度与力量。 最终，闪电以压倒性的优势获得了比赛的冠军，它的日行千里的事迹被世人广为传颂。从此，“日行千里”便成了形容速度极快的一个成语。
Long ago, on a vast and boundless grassland, lived a group of magical horses. These horses were extraordinary, not only were their coats bright and beautiful, but their running speed was also extremely fast. It was said that they could run thousands of miles in a day, a true miracle of the grassland. Among them, a horse named "Lightning" was the most famous. Its coat was a dazzling gold, its mane flowed like a waterfall, and its four hooves seemed to be blown by the wind. It not only ran fast but also had amazing stamina, even long journeys did not tire it. One day, Lightning and several other horses participated in a grand grassland horse race. The starting and ending points were thousands of miles apart, and the route passed through rolling hills, vast plains, and fast-flowing rivers. As soon as the race began, Lightning dashed out like a golden lightning bolt, far ahead of the other horses. It galloped across the grassland, facing the wind, stepping on the grass, its speed was unbelievable. The spectators along the way were amazed by Lightning's speed, cheering for it. Even the other horses couldn't help but stop to watch, to feel Lightning's speed and power. Finally, Lightning won the race with an overwhelming advantage, and its feat of traveling a thousand li a day was widely celebrated. Since then, "日行千里" (Rì xíng qiānlǐ) has become an idiom to describe extremely fast speed.
Usage
用于形容速度非常快。
Used to describe a very high speed.
Examples
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这匹马日行千里，速度惊人！
zhè pǐ mǎ rì xíng qiānlǐ, sùdù jīngrén!
This horse travels a thousand li a day, its speed is amazing!
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他的工作效率很高，简直日行千里。
tā de gōngzuò xiàolǜ hěn gāo, jiǎnzhí rì xíng qiānlǐ.
His work efficiency is very high, he literally travels a thousand li a day.
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学习也要日行千里，才能取得好成绩。
xuéxí yě yào rì xíng qiānlǐ, cáinéng qǔdé hǎo chéngjī.
Learning also needs to make progress every day, in order to achieve good results.