Nam Sago (Korean: 남사고, Hanja: 南師古, 1509–1571) was a scholar of the Joseon period of Korea.
[1] He was well versed in mechanics 역학(易學), geomancy 풍수(風水), astrology 천문(天文), divination 복서(卜筮) and physiognomy 관상(觀相).
[2] In a first part of his adult life, he lived as a wandering scholar, traveling to famous mountains all over the country to detect auspicious sites.
During the reign of Seonjo, Nam Sago is quoted as an expert in pungsu (geomancy) 1593-01-12, art.3 (about the fortunes of the sky and fortune-telling) or 1600-07-26, art.
[8] On the contrary, it has been proven[9] that the so-called Gyeogam Yurok (Nam Sago Prophecies) released in 1977 by Lee Do-eun was just a forgery, written after the events it was supposed to predict.