例如，在北京和河北，饺子皮是用擀面杖擀的，而在内蒙古等一些地方，饺子皮是用手压的。

For example, dumpling wrappers are made with a rolling stick in Beijing and Hebei province, while in some parts of Inner Mongolia, wrappers are hand pressed.

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辽宁内蒙古和河北交界地带的红山文化。

Liaoning and Inner Mongolia and Hebei border area of the Hongshan culture.

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