It's not well known that the map's designer was just a doctoral candidate, and he wasn't even studying a map-related field like geography, but rather geology: experimenting on rocks.
更鮮為人知的是，該圖的繪製者只是位博士生，而且當時主修的並不是頻繁使用地圖的地理學，而是專門化驗石頭的地質學。他，就是地圖達人葉高華。