积水成渊 Water accumulates into a deep pool
Explanation
渊：深水潭。点点滴滴的水聚积起来，就能形成一个深潭。比喻积小成多。
Yuān (yuān): deep pool. Drop by drop, water accumulates to form a deep pool. It is a metaphor for the accumulation of small things into large ones.
Origin Story
从前，在一个偏僻的小山村里，住着一位勤劳的农夫。他每天辛勤劳作，从不偷懒。他有一块小小的田地，虽然不大，但他总是精心耕种。他把每一粒种子都播撒得非常仔细，每次浇水施肥都非常认真。日复一日，年复一年，他的田地里总是长满了丰收的庄稼。他家里的粮食也越来越多，丰衣足食。村里其他农夫都觉得很奇怪，为什么他的收成总是那么好。农夫笑着说：“积水成渊，聚沙成塔，只要我们肯努力，肯付出，即使再微小的努力，也能积少成多，最终取得巨大的成就。”他用自己的行动向大家证明了这句话的道理。
Once upon a time, in a remote small village, there lived a hardworking farmer. He worked hard every day and never slacked off. He had a small piece of land, which was not big, but he always cultivated it carefully. He sowed every seed very carefully, and every time he watered and fertilized, he was very careful. Day after day, year after year, his field was always full of a bumper harvest. His house had more and more food, and he had enough to eat and wear. Other farmers in the village wondered why his harvest was always so good. The farmer said with a smile, "Water accumulates into a deep pool, sand grains form a tower, as long as we are willing to work hard, even the smallest efforts can accumulate and eventually achieve great success." He proved the truth of this sentence to everyone with his actions.
Usage
比喻积小成多，也比喻积累经验，力量等。
It is used to illustrate the accumulation of small things to many, but also the accumulation of experience, strength, etc.
Examples
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十年磨一剑，功成名就非一日之寒，正是积水成渊的道理。
shí nián mó yī jiàn, gōng chéng míng jiù fēi yī rì zhī hán, zhèng shì jī shuǐ chéng yuān de dàolǐ
It takes ten years to sharpen a sword, success and fame do not come overnight, which is the truth of "water accumulates into a deep pool".
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学习贵在坚持，积水成渊，水滴石穿，只有持之以恒才能取得成就。
xuéxí guì zài jī chí, jī shuǐ chéng yuān, shuǐ dī shí chuān, zhǐ yǒu chí zhī hén cái néng qǔdé chéngjiù
Learning requires perseverance, "water accumulates into a deep pool", dripping water wears away a stone, only perseverance can achieve success.