TL;DR: The story of Lạc Long Quân and Âu Cơ, the sack of one hundred eggs, is an origin myth of the people, recorded by old histories such as Đại Việt sử ký toàn thư and Đại Nam quốc sử diễn ca at the beginning, before the chapters on dynasties with dates. The histories differ in names, details and interpretation. Modern scholars regard it as legendary history, reflecting the formation of the Bách Việt community rather than a chronicle of events.
How do the old histories record the tale of Lạc Long Quân and Âu Cơ?
The tale of Lạc Long Quân and Âu Cơ, with the hundred-egg sac, is an origin myth of the people, placed by the old histories at the beginning, before the dynasties with specific dates. The chronicles differ in names, details and interpretation. What they share is setting the story in the Hồng Bàng period, before the state of Văn Lang of the Hùng kings.
Where does the tale come from: old histories and folk legend
The old histories record this tale in their opening section, treating it as the origin of the people. In the translation of Đại Việt sử ký toàn thư completed in 1945, the translator Mạc Bảo Thần (Nhượng Tống) left a comment: in the Hồng Bàng era our people had not yet formed a state, their life was still tribal, much like that of the Mường and the Thổ of his day; if the Hùng kings and the Thục king did exist, they were only chieftains who rose in a particular period[1]. This comment shows that already in the mid twentieth century the translator placed the Hồng Bàng tale in the realm of myth and historical conjecture, not of dated chronicle.
As a text, Đại Việt sử ký toàn thư is a history compiled by Ngô Sĩ Liên and the Lê court historians, completed in 1479, covering the Hồng Bàng era down to 1427. The tale of Lạc Long Quân and Âu Cơ stands at the beginning, in the ngoại kỷ or the origin section depending on how different printed editions divide the work.
What does Đại Việt sử ký toàn thư record about Lạc Long Quân and Âu Cơ?
Trần Trọng Kim in Việt Nam sử lược, published in 1920, in the section on the Thượng cổ period, retells the old tradition: King Đế Minh, great-grandson three generations removed of King Thần Nông, on a southern tour stopped at the Ngũ Lĩnh mountains (now in Hồ Nam province), met a fairy there, married her and fathered Lộc Tục. Later Đế Minh yielded the throne to his eldest son Đế Nghi to rule the north, and enfeoffed Lộc Tục to govern the south with the title Kinh Dương Vương, giving the state the name Xích Quỷ[2].
At that time the territory of Xích Quỷ was defined: to the north it bordered Động Đình lake (Hồ Nam), to the south the state of Hồ Tôn (Chiêm Thành), to the west Ba Thục (Tứ Xuyên), and to the east the South Sea. Kinh Dương Vương ascended the throne of Xích Quỷ around the year Nhâm Tuất (2879 BCE); he married the daughter of the lord of Động Đình, Long Nữ, who gave birth to Sùng Lãm. Sùng Lãm succeeded to the throne and took the title Lạc Long Quân[2].
Việt Nam sử lược goes on to record that Lạc Long Quân married Âu Cơ, daughter of King Đế Lai, who bore a hundred sons at one birth; fifty then followed their mother to the mountains and fifty followed their father down to the Nam Hải sea. A footnote in the book says that some texts have Âu Cơ laying a hundred eggs that hatched into a hundred children[2].
Đại Việt sử ký toàn thư, in the Mạc Bảo Thần translation, records that Kinh Dương Vương, personal name Lộc Tục, married the daughter of the lord of Động Đình, named Thần Long, who bore Lạc Long Quân. Lạc Long Quân, personal name Sùng Lãm, married Âu Cơ, daughter of Đế Lai, who bore a hundred sons; the text adds that "tradition says she bore a hundred eggs", and that these were the ancestors of the Bách Việt. The king told Âu Cơ: "I am of the Dragon kind, you are of the Fairy kind; water and fire oppose each other, it is hard to stay together", and fifty sons followed their mother to the mountains while fifty followed their father in the South; the eldest son was made Hùng Vương and succeeded to the throne[1]. In his comment the translator notes that the unofficial history Ngô Sĩ Liên drew on for the Hồng Bàng era was the book Lĩnh Nam chích quái[1].
The hundred-egg sac and the parting in the old histories
Đại Nam quốc sử diễn ca, compiled by Lê Ngô Cát and collaborators in 1870, in its passage on Lạc Long Quân and Âu Cơ, records: Lạc Long was joined to Âu Cơ, the sign of a hundred boys came true, how strange. Though the egg sac is a wild tale, how does it differ from the dark bird bearing Shang? That they parted and came together was also truly strange, not as the saying goes that water and fire part; the dividing of the children was also a wonder of the world, some to the mountains, some to the sea, like people separated. Lạc Long returned to the southern region, Âu Cơ went to the Ba Vì, Tản Viên side. They chose one worthy son to set the affairs of state in order and continue the dragon throne[3].
This verse passage shows the old history both recording the tale and asking about its truth. The line that the egg sac is a wild tale is the compiler's own admission that the egg story is fabulous, and they compare it with the Chinese allusion of the dark bird bearing Shang to explain why the tale was transmitted.
Why do the old histories put myth at the beginning of the book?
The old histories record the origin myth before the chronicle for several reasons. First, people of old held that the history of a people must begin at the origin, even when that origin is legendary. Second, an origin tale serves to bind the community, as the Mạc Bảo Thần translation of Đại Việt sử ký toàn thư comments: that hundred-egg myth served to explain the meaning of Bách Việt and to express the connection among the Việt peoples[1]. This comment stresses that whoever devised the hundred-egg story meant to suggest to the Bách Việt that however different their customs, tribes and tongues, whether mountain dwellers or sea dwellers, their ancestors were born of one mother[1].
Third, placing myth at the beginning of a history also reflects the Confucian view of the origin of the people, linking the Việt to the line of Thần Nông according to Chinese legend. This is an interpretation of its time, not a scientific conclusion.
Variants and differences among the histories
The histories and old texts do not record this tale identically. The table below compares some main points:
| Source | Names of figures | Differing details | Interpretation |
|---|---|---|---|
| Đại Việt sử ký toàn thư (Mạc Bảo Thần translation, 1945) | Kinh Dương Vương, Thần Long, Lạc Long Quân, Âu Cơ | Âu Cơ is the daughter of Đế Lai and bears a hundred sons, by tradition a hundred eggs; 50 sons follow their mother to the mountains, 50 follow their father in the South | The translator comments that in the Hồng Bàng era our people still lived tribally, the Hùng king was only a chieftain |
| Việt Nam sử lược (Trần Trọng Kim, 1920) | Kinh Dương Vương, Long Nữ, Lạc Long Quân, Âu Cơ | Records Đế Minh, Lộc Tục, Xích Quỷ, the year Nhâm Tuất (2879 BCE, with a question mark); a hundred sons, 50 to the mountains, 50 down to the Nam Hải sea | Presented as tradition; the author himself says the Hồng Bàng stories are not certain to be true |
| Đại Nam quốc sử diễn ca (Lê Ngô Cát and collaborators, 1870) | Lạc Long Quân, Âu Cơ | Records in lục bát verse, stresses the parting and the choosing of a worthy son to succeed | The compiler himself calls it a wild tale, comparing it with a Chinese allusion |
The table shows the histories differ in names, dates and interpretation. Đại Nam quốc sử diễn ca stresses the dividing of the children and the choosing of a successor, while Việt Nam sử lược records the sequence from Đế Minh to Lạc Long Quân, and the translation of Đại Việt sử ký toàn thư carries a comment questioning its truth.
Âu Cơ in modern research
According to Niculae Liviu Gheran in a 2022 research article in the journal Caietele Echinox, the tale of Lạc Long Quân and Âu Cơ can be read as a myth of the mother goddess. The article records that the southern people, having at that time no army or leader, called on the mythic Lạc Long Quân. The dragon lord returned, and the strategy he chose was to abduct Âu Cơ from the northern king and take her to the summit of Tản Viên mountain. The northern king, seeing he could not defeat Lạc Long Quân or reclaim the queen, withdrew his troops. Âu Cơ fell in love with Lạc Long Quân and gave birth to a sac of a hundred eggs, which hatched into a hundred children. After a time, however, the couple parted, Lạc Long Quân taking 50 children to the sea, Âu Cơ taking the other 50 to the mountains. The children who stayed with Âu Cơ grew up to be the ancestors of the Hùng kings and the Vietnamese people[4].
The article also observes that the departure of the male deity left the ancient Việt with only a mother goddess, who took on the role of the Great Mother. Her throne was a mountain (Tản Viên). The author cites Erich Neumann's remark that the primal throne of the Goddess is the mountain, where the symbols of earth, cave, mass and height combine; the mountain is the symbol of the immovable, the fixed, visibly dominating the land[4].
The version the article uses is that of the book Lĩnh Nam chích quái, where according to the author the tale first appeared in written form[4]. In that version Âu Cơ is the wife of the northern king, unlike Đại Việt sử ký toàn thư and Việt Nam sử lược, which make her the daughter of Đế Lai[1]. The article's reading is a scholarly interpretation of symbols, not a conclusion about historical events.
Is the hundred-egg tale a historical event?
No. The hundred-egg tale is myth, not a historical event. In the translation of Đại Việt sử ký toàn thư, Mạc Bảo Thần commented that in the Hồng Bàng era our people had not yet formed a state; if the Hùng kings did exist they were only chieftains who rose at a certain time, and it was the myths themselves that made those kings great[1]. This is the translator's view, recorded in the 1945 translation.
Modern researchers likewise treat the tale as legendary prehistory, reflecting the formation of the Bách Việt community and a sense of common origin, not a dated chronicle. That the old histories place the tale at the beginning of the book reflects the outlook of people of old on history; it does not prove the tale was a real event.
Nhật Nguyệt's suggestion: how should one read the myth correctly?
When reading the tale of Lạc Long Quân and Âu Cơ in the old histories, one should distinguish three layers. The first is the text: what the old history records, when, and in which translation. The second is the legend: the story transmitted in folk tradition and set down by the historian. The third is history: what can be conjectured about the Hồng Bàng period from archaeological evidence and ethnographic comparison.
That the old histories record myth does not mean myth is historical fact, nor that myth is worthless. The hundred-egg tale has value as a cultural symbol of the common origin of the Việt communities, as the comment in the translation of Đại Việt sử ký toàn thư stressed[1]. Reading this tale, one should place it in its specific cultural and historical context, avoiding both extremes: treating it as a real event, or dismissing its cultural value entirely.
