There is a fascinating account of pearl-like UFOs seen repeatedly in the city of Yangzhou during the reign of Emperor Jiayou (1056-1064) of the Song Dynasty. The case is significant because a record and commentary on this “strange happening” was included by Shen Kuo (1031-1095) in his classic “Mengxi Bitan” Dream Pool Essays of 1088. Little known in the West except for specialists in Chinese history, Shen Kuo (also known as Shen Kua or Shen Gua) is revered in China as one of the greatest polymaths of the Middle Ages—a high government official in the Soong Dynasty, Imperial Astronomer, surveyor, cartographer, and much more.

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