Korean supreme heavenly ruler; lord of heaven in the Tangun foundation myth as preserved in the Samguk Yusa (1281 CE). Father of Hwanung the heavenly prince who descended to Mt. Taebaek (often identified with Mt. Baekdu on the modern Korea-China border); grandfather of Tangun, founder of Gojoseon. Hwanin granted his son Hwanung permission to descend to earth and bestowed three heavenly seals — a bell, a mirror, and a sword — as the regalia of divine kingship. (The mirror-sword-jewel triad is a wider East Asian sacral-kingship motif also present in the Japanese imperial regalia.) In modern Korean religion, Hwanin is identified with Hanullim ("Lord of Heaven") and Sangje, and is the central deity of Daejongism (a 20th-c. revival movement worshipping the Hwanin-Hwanung-Tangun trinity).