Xian Mu — Summer Horse Ceremony in Ancient Chinese Ritual 先牧
Paul PengXian Mu (先牧) is the summer horse sacrifice of ancient China — the second of the four seasonal horse ceremonies prescribed in the Zhouli. Dedicated to the mythic First Herdsman, the person who first raised horses, the ritual combined ceremonial veneration of an occupational ancestor with practical herd management: distributing horses and performing castration during the season of lush summer pasture, when the conditions for equine fattening were at their peak.
Xian Mu (先牧, Xiān Mù, lit. “First Herdsman”) is the summer ceremony in ancient China’s four-season horse sacrifice system, honoring the mythic cultural hero who first domesticated and raised horses. The term appears in the Zhouli (周礼, “Rites of Zhou”), “Xia Guan: Xiaoren” (夏官·校人) chapter, as the second of four seasonal horse rituals. Unlike the spring Ma Zu ceremony, which honored a celestial horse ancestor (the Tian Si constellation), the Xian Mu honored a human cultural founder — the first person to practice horse husbandry — making this ceremony a form of ancestor worship for an occupational rather than biological lineage.
The Zhouli (周礼), compiled during the Warring States period (c. 4th–3rd centuries BCE), prescribes in the “Xia Guan: Xiaoren” chapter:
“In summer, sacrifice to the First Herdsman; distribute horses and castrate.”
Zheng Xuan (郑玄, 127–200 CE) identifies the object of the sacrifice: “先牧，始养马者，其人未闻。” (“The First Herdsman is the first person to raise horses; who this person was is unknown.”) This acknowledgment of historical obscurity is significant: even by the Eastern Han period, the Xian Mu had become a purely mythic category — a figure whose identity was lost but whose ritual function remained. Jia Gongyan (贾公彦, 7th century CE) elaborates in his Tang Dynasty sub-commentary:
“The First Herdsman is the ancestor of herders, the first to raise horses. Sacrifice is made to this figure because summer grass is lush, and one seeks fatness and fullness [for the horses].”
The Shisan Jing Zhushu (十三经注疏), compiled under Kong Yingda (孔颤达, 574–648 CE) during the Tang Dynasty, provides additional layers of interpretation emphasizing the practical dimension: the “distribution” (颌, bān) of horses and “castration” (攻特, gōng tè) were herd management operations that the ritual simultaneously sanctified and facilitated.
In the Zhengyi tradition, the Xian Mu ceremony’s concept of honoring a “first practitioner” (先, xiān) finds direct parallels in Daoist lineage worship. The Zhengyi tradition venerates Zhang Daoling as the founding ancestor figure (祖师, zǔshī) in a manner structurally analogous to the Zhou veneration of the First Herdsman — both represent occupational founders whose ritual commemoration establishes the legitimacy and continuity of the tradition. For the history of Zhang Daoling’s founding of the Zhengyi tradition at Longhu Mountain, see The Founder of Daoism: Zhang Daoling.
The integration of practical labor with ritual observance in the Xian Mu ceremony also resonates with the Zhengyi principle that sacred and profane activities are not separate domains but can be ritually unified. The Xian Mu’s combination of sacrifice and herd management — the ritual sanctifying the practical, the practical grounding the ritual — exemplifies the classical Chinese understanding that proper ritual observance maintains the harmony between human activity and cosmic order. For a practical overview of how such ritual frameworks are structured and performed in contemporary Zhengyi practice, see What Is a Taoist Ritual and Their Process.
The Xian Mu ceremony occupies a distinctive position within the four-season horse sacrifice system: it is the only ceremony dedicated to a human cultural founder rather than a deity or spirit. By honoring the First Herdsman — the person who first raised horses — the Zhou ritual system acknowledged that the arts of horse husbandry were themselves a form of cultural achievement deserving ritual commemoration. The fact that the First Herdsman’s historical identity was already unknown by the Eastern Han period reveals how ancient this veneration was: the figure had become purely mythic, a placeholder for the entire tradition of human knowledge about horses. In this convergence of mythic ancestor veneration and practical herd management, the Xian Mu exemplifies the classical Chinese understanding that ritual must address both the cosmic and the practical dimensions of human activity — that the blessing of the spirits and the skill of the herdsman are not alternatives but complements.
