The Cao Yi 曹佾 — Cao Guojiu 曹国舐, the Immortal of the Eight

The title Guojiu (国舐 — "Uncle of the State") was not a courtesy title or a religious epithet. It was a formal designation within the Song imperial family structure, marking Cao Yi's relationship to the empress and, through her, to the emperor himself. In practical terms, it meant access to the highest levels of court life, a degree of social protection that few could match, and the kind of material comfort that most people in 11th-century China could not have imagined.

His grandfather, Cao Bin (曹彬, 931–999), was one of the founding military figures of the Song Dynasty — a general whose campaigns helped consolidate Song imperial power and whose reputation for discipline and restraint made him one of the most respected commanders of his era. The Cao family name carried genuine weight, earned through genuine service.

Cao Yi inherited all of this. And then, in middle age, he left it.

The biographical record is spare on the details of Cao Yi's departure from court life. We know that in his middle years he retreated to live in the mountains and forests, devoting himself to spiritual cultivation and Daoist practice. What we don't know — and what the tradition doesn't seem particularly interested in telling us — is exactly why.

What Cao Yi chose was the life of a Daoist cultivator — the disciplines of breath, stillness, and inner refinement that the tradition had developed over centuries. For a man of his background, this was not a small thing. It meant trading the rhythms of court life for the rhythms of mountain practice, the company of officials and relatives for the company of whatever teachers and fellow practitioners he could find.

According to Cao Yi's own account, his practice eventually brought him into contact with two of the most celebrated figures in the Daoist immortal tradition: Zhongli Quan (钒离权) and Lü Chunyang (吕純阳 — better known as Lü Dongbin 吕洞宾), who secretly transmitted Daoist doctrines and practices to him.

The claim that these transmissions happened is, of course, one that different readers will evaluate differently. What matters historically is that Cao Yi's contemporaries and successors found the claim credible — credible enough to include him in the canon of the Eight Immortals, a group whose membership was not assigned lightly.

The Eight Immortals (八仙, Bā Xiān) are among the most recognizable figures in Chinese religious culture — a group of eight individuals, each with a distinct personality, background, and set of attributes, who together represent the full range of human types that the Daoist path can accommodate. They include a woman, a cripple, a scholar, a soldier, a young man, an old man, a drunk, and — in Cao Yi — a member of the imperial family.

In traditional iconography, Cao Yi is typically depicted holding a pair of castanets or jade tablets — attributes associated with his aristocratic origins and his role as a patron of musicians and performers. His feast day is celebrated on the 16th day of the 8th lunar month.

Cao Yi died in 1097, toward the end of the Northern Song period. He left no major texts, founded no school, and trained no famous disciples. His legacy is entirely biographical — the story of a life that made a particular choice and, by making it, became part of a tradition that has been telling that story ever since.

The question his life poses is not complicated, but it is persistent: what is actually worth having? The Daoist tradition has always been willing to sit with that question longer than most — to take seriously the possibility that the answer might be different from what the world assumes. Cao Yi's biography is one of the tradition's most vivid illustrations of what it looks like when someone acts on that possibility, fully and without reservation.

For anyone drawn to the Daoist cultivation path, his story is worth returning to — not as a model to imitate literally, but as a reminder of what the tradition considers genuinely possible.