Context: CREATE TABLE table_1976898_1 (post_code INTEGER, chinese_name__simplified___traditional_ VARCHAR)
Question: What's the post code of the county with the Chinese name  潜山县 / 潛山縣?
Answer: SELECT MIN(post_code) FROM table_1976898_1 WHERE chinese_name__simplified___traditional_ = "潜山县 / 潛山縣"