潼关 Traditional form: 潼關 Pinyin (reading): Tóngguān Definitions: Tongguan County in Weinan 渭南 ( Wèinán), Shaanxi Characters: 潼 - high, lofty; a mountain pass 关 - frontier pass; to close, to shut; relation Traditional characters: 潼 - high, lofty; a mountain pass 關 - frontier pass; to close, to shut; relation