en.wikipedia.org/wiki/Liangpi

The Chinese name given immediately after this phrase is 汉中面皮 / 漢中面皮, with pinyin Hànzhōng miànpí. In standard Hanyu Pinyin, 面皮 is romanized miàn pí (commonly written together in food names as mianpi), not mini.

This is also how official sources refer to the dish:

• The Hanzhong Municipal Bureau of Economic Cooperation page is titled “汉中米面皮” and states that “2011年‘汉中面皮制作技艺’列入陕西省第三批非物质文化遗产名录”.
• The Ministry of Education’s Revised Mandarin Chinese Dictionary gives 面皮 the Hanyu Pinyin “miàn pí.”

So the article’s English-form label “Hanzhong mini” does not match the official Chinese name or its standard romanization. The correct romanization is Hanzhong mianpi.