Doseon

Tosŏn Kuksa (826-898), also known as Yogong Sŏnsa and Yŏn'gi Tosŏn, was a pivotal Korean Buddhist monk during the late Silla Dynasty, preceding the Goryeo Dynasty. He hailed from Gurim Village in Yeongam County, South Jeolla Province. Legend surrounds his birth, with tales of auspicious dreams and early signs of spiritual aptitude. Tosŏn's spiritual journey began in earnest when he became a monk at Hwaeomsa Monastery at the age of 15, quickly demonstrating profound understanding of Buddhist scriptures. He later studied under Master Hyecheol Jeoginseonsa and distinguished himself as a respected Daoist master. His travels included a significant period in Tang China, where he delved into esoteric Daoist and Buddhist teachings on astronomy, astrology, mathematics, geomancy (Feng Shui), cosmology, and the I Ching. Upon his return to Korea, Tosŏn extensively studied the peninsula's geography and energies. He is renowned for developing the Korean Pungsu-jiri-seol, a unique adaptation of Chinese feng shui that emphasizes ecological harmony and the spiritual and material energies of landscapes. Tosŏn founded Okryongsa Temple, where he taught for 35 years, and was recognized by King Heongang as Silla's leading master-monk. He is also credited with developing the concept of the Baekdu-daegan, the "spine" of Korea's earth energy, making him a significant figure in Korean fortunetelling. His most profound influence was as an advisor to Wang Geon (later Taejo of Goryeo), providing guidance that shaped the founding of the Goryeo Dynasty, including recommendations for capital city placement and temple construction based on geomantic principles detailed in the Tosŏn-bigi. Tosŏn died in 898 at Baekunsan Okryongsa, receiving posthumous titles and honors from subsequent Goryeo kings, solidifying his legacy as a national master.