This threw up another difficulty: according to Xin Yi Xiang Fa Yao, the constellations on the globe were marked out in "pearls of five colors." But ancient books were not printed in color, so one can only see black and white.
這裡又發生了一個困擾：根據《新儀象法要》，渾象上的星座，是用「五色珠」來點的；但古書沒有彩色印刷，只能看見黑或白。