白山黑水 White Mountains, Black Waters
Explanation
白山指长白山，黑水指黑龙江。泛指中国东北地区，常用来形容东北地区广袤的山川河流。
White Mountain refers to Changbai Mountain, and Black Water refers to Heilongjiang River. It generally refers to the northeastern region of China and is often used to describe the vast mountains and rivers in the northeastern region.
Origin Story
很久以前，东北大地人烟稀少，只有莽莽群山和奔腾的河流。长白山，高耸入云，白雪皑皑，宛如一位威严的巨人守护着这片土地。黑龙江，蜿蜒流淌，水流湍急，如同一条黑色的巨龙盘踞在山脚下。这里山峦起伏，森林茂密，资源丰富，被称为白山黑水。后来，勤劳勇敢的人们来到这里，开垦荒地，建设家园，白山黑水逐渐成为了富饶的土地。
Long ago, the northeastern land of China was sparsely populated, with only vast mountains and rushing rivers. Changbai Mountain, towering into the clouds, covered in white snow, resembled a majestic giant guarding the land. Heilongjiang River, winding and flowing swiftly, was like a black dragon coiled at the foot of the mountain. Here, mountains rose and fell, forests were dense, resources were abundant, hence the name White Mountains and Black Waters. Later, hardworking and brave people came here, cultivated the wasteland, built their homes, and the White Mountains and Black Waters gradually became fertile lands.
Usage
多用于描写东北地区，有时也用来比喻东北地区的人民或事物。
It is mostly used to describe the northeastern region of China, sometimes also used to refer to people or things in the northeastern region.
Examples
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白山黑水之间，孕育了独特的东北文化。
bái shān hēi shuǐ zhī jiān, yùn yù le dú tè de dōng běi wén huà.
The unique northeastern culture is nurtured between the White Mountains and the Black Waters.
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东北地区，素有白山黑水之称。
dōng běi dì qū, sù yǒu bái shān hēi shuǐ zhī chēng.
The northeastern region is known as the land of White Mountains and Black Waters.