Lạc Long Quân (Chữ Hán:貉龍君; "Dragon King of Lạc"; also called Sùng Lãm 崇纜) is a semi-mythical king of the Hồng Bàng dynasty of ancient Vietnam. Quân was the son of Kinh Dương Vương, the king of Xích Quỷ. He is the main figure in the Vietnamese creation myth of . According to the myth, Lạc Long Quân married Âu Cơ, a mountain fairy. She gives birth to a sac containing 100 eggs from which 100 children were born; this is the origin of the Vietnamese peoples. One day Lạc Long Quân told Âu Cơ: "I am descended from dragons, you from fairies. We are as incompatible as water is with fire. So we cannot continue in harmony." This said, the husband and wife parted. The man went to the seawards with 50 of their children, while his wife went to the mountainous region with the other half of the clan. The eldest son, who followed his mother, later installed himself as Quân's successor. Genealogy Lạc Long Quân's father was Kinh Dương Vương and Lạc Long Quân's mother is Thần Long. In Vietnamese literature The books (from the 15th century) and ("Wonders plucked from the dust of Linh-nam", from the 14th century) mention the legend with Âu Cơ. Ngô Sĩ Liên commented on the somewhat primitive nature of the relationship between the two progenitors, given that Lạc's father Kinh Dương Vương and Âu's grandfather Đế Nghi were brothers. Mythology Slaying of the Ngư tinh During Lạc Long Quân's time, the people of Van Lang was still undeveloped and isolated. In the Eastern sea, there appears a giant Fish called Ngư Tinh (, Vietnamese for "fish monster" or "fish spirit"). This fish has lived for many centuries and had a mouth so big it could swallow an entire ship containing 10 fisherman in a single gulp. Whenever the fish swim, waves would reach for the sky, drowning many ships unfortunate enough to be caught in its path, and all the people passing through the area would become the fish's next meal. Ngư Tinh lives in a big cave under the sea, above the cave is a huge mountain which divides the sea into two areas. Lạc Long Quân decided to offer his help to the people by slaying the fish. He built a huge ship, made a burning human-shaped piece of metal, then sailed straight towards Ngư Tinh's nest. There he