源远流长 long and rich
Explanation
源头很远，水流很长。比喻历史悠久，延续时间很长。
The source is far away, and the stream is long. It is used to describe a long history, lasting for a long time.
Origin Story
传说中的黄河，奔腾不息，从远古时代就孕育了中华文明。黄河的源头在青藏高原，蜿蜒流淌数千里，最终汇入渤海。这漫长的河道，滋养了无数生灵，也见证了中华民族五千多年的辉煌历史。中华文明如同黄河般源远流长，代代相传，历经风雨，依然充满生机，它孕育了无数的文化瑰宝，也塑造了中华民族坚韧不拔的精神。从古老的甲骨文到现代的高科技，从丝绸之路到改革开放，中华文明的印记遍布世界的每一个角落。正是这源远流长的历史，赋予了中华民族独特的文化魅力，也让世界对中国充满了敬意和好奇。 中华民族的传统节日，如春节、中秋节等，也源远流长。这些节日不仅是人们庆祝和团聚的日子，更是传承中华文化的重要载体。一代又一代的人们，通过这些节日的庆祝，感受着中华文明的博大精深，并将这份宝贵的文化遗产传承下去。
The legendary Yellow River, surging endlessly, has nurtured Chinese civilization since ancient times. Its source is in the Qinghai-Tibet Plateau, meandering thousands of miles, eventually flowing into the Bohai Sea. This long waterway has nourished countless living things and witnessed the glorious history of the Chinese nation for more than 5,000 years. Chinese civilization, like the Yellow River, has a long and glorious history, passed down from generation to generation, weathering storms, and remaining vibrant. It has nurtured countless cultural treasures and shaped the indomitable spirit of the Chinese nation. From ancient oracle bones to modern high technology, from the Silk Road to reform and opening up, the mark of Chinese civilization is found in every corner of the world. It is this long history that gives the Chinese nation its unique cultural charm and fills the world with respect and curiosity for China.
Usage
用来形容历史悠久，延续时间很长的文化、制度、事件等。
Used to describe a long history, long-lasting system or event that has lasted for a long time.
Examples
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中华文化源远流长，博大精深。
Zhonghua wenhua yuanyuanliuchang,boda jingshen.
Chinese culture has a long and glorious history.
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这支乐队的历史源远流长，他们的音乐风格也因此独具特色。
Zhe zhi yuedui de lishi yuanyuanliuchang,ta men de yinyue fengge ye yin ci duju teshe
This band has a long and rich history, and their musical style is unique as a result.