Haemosu vs Jumong

The Son of Heaven who descends in a five-dragon chariot, seduces Yuhwa, daughter of the River Earl, by the Amnok (Yalu) River, and becomes the father of Jumong, founder of Goguryeo.

Son of Heaven (the Heavenly Emperor), in Samguk Sagi and Yi Gyu-bo's poem.

In Kim Busik's *Samguk Sagi* (1145), Yuhwa tells King Geumwa of East Buyeo that a man calling himself Haemosu, son of Heaven, lured her to a house by the Amnok (Yalu) River beneath Mount Ungsim, lay with her, and never returned; her parents, ashamed, banished her. Yi Gyu-bo's *Lay of King Dongmyeong* (1193), quoting a lost older history, describes Haemosu's descent more grandly: he comes down in a chariot drawn by five dragons, with a hundred followers riding swans, wearing a crown of crow feathers and a sword of dragon-light, going up to heaven at evening and descending in the morning.

The egg-born son of Heaven and of the River Earl's daughter, a peerless archer who flees East Buyeo when fish and turtles rise to bridge a river for him, founds Goguryeo at Jolbon, and in the earliest account ascends to heaven on a yellow dragon.

Hatched from an egg laid by Yuhwa, daughter of Habaek, after she was touched by the sunlight of Heaven; son of Haemosu in Samguk Yusa and Yi Gyu-bo.

The Gwanggaeto Stele of 414 CE, the oldest written source for any Korean foundation myth, says that King Chumo, son of the Heavenly Emperor and the daughter of Habaek, broke from an egg; traveling south, he reached a great river and declared himself son of heaven and grandson of Habaek, and reeds joined and turtles surfaced to let him cross. He founded his capital on the mountain west of Holbon. Tired of the world, he was fetched by a yellow dragon sent from heaven and rose to heaven from a hill east of Holbon, standing on the dragon's head.