CREATE TABLE table_23303 ("English Name" TEXT, "Chinese Name  ( Simplified / Traditional ) " TEXT, "Pinyin" TEXT, "Population" FLOAT, "Post Code" FLOAT)

What's the post code of the county with the Chinese name / ?
SELECT MIN("Post Code") FROM table_23303 WHERE "Chinese Name (Simplified / Traditional)" = '潜山县 / 潛山縣'
SELECT MIN("Post Code") FROM "table_23303" WHERE "Chinese Name (Simplified / Traditional)" = '潜山县 / 潛山縣'