Cao Bao 曹宝 — Master of Buxu Chanting in the Southern Dynasties
Paul PengIn the two capitals of the Southern Dynasties, people who had heard Cao Bao (曹宝) perform the buxu chant said there was no one like him. The sources do not elaborate. They do not need to. “Unrivaled in the two capitals” is a precise claim, and the people making it knew what they were comparing him to.
Buxu (步虚) — the melodic, floating chant that gives Daoist ritual its most distinctive sonic character — is not easy to do well. It requires years of training, a particular quality of voice and breath, and an understanding of the ritual context that goes beyond technique. Cao Bao had all of it. His contemporaries noticed.
Key Takeaways
- Cao Bao 曹宝 (courtesy name Shizhen) was a native of Danyang (丹阳, in the Jiangnan region) during the Southern Dynasties period
- He was deeply versed in Daoist ritual etiquette and the jiao ceremony (醒, jiāo) — the grand communal offering ritual that is one of the most important forms of Daoist liturgical practice
- He was particularly renowned for his mastery of buxu chanting (步虚, bùxū) — the melodic, rhythmic vocal style unique to Daoist ritual, understood as a form of celestial music that bridges the human and divine worlds
- His skill was described as unrivaled in the two capitals — the highest praise available in the Southern Dynasties context, where the courts of Jiankang and other major cities hosted the most accomplished Daoist practitioners of the age
- He was praised endlessly by people of his time, a reputation that outlasted him in the biographical record
- Primary sources: Daoxue Zhuan (道学传, Biographies of Daoist Scholars); Taiping Yulan (太平御览), Volume 666
Cao Bao (曹宝) of Danyang — Southern Dynasties Daoist liturgist, master of jiao ceremony and buxu chanting, unrivaled in the two capitals of his age.
Note on the “two capitals”: During the Southern Dynasties, the “two capitals” typically referred to Jiankang (present-day Nanjing) — the primary imperial capital — and one or more secondary capitals or major cities. To be recognized as unrivaled across both was to be acknowledged by the most demanding and knowledgeable audiences of the age.
What Buxu Actually Is
Buxu (步虚, literally “stepping through the void”) is the chanting style that most distinctively marks Daoist ritual as Daoist. It is melodic, sustained, and deliberately otherworldly in character — designed not to entertain but to create a sonic environment in which the boundary between the human and the divine becomes permeable. The texts that govern buxu performance describe it as celestial music: the sound that the immortals make as they move through the heavens, brought down into the ritual space by the priest’s voice.
The Buxu scriptures of the Lingbao tradition — which were being compiled and circulated in the Southern Dynasties precisely during Cao Bao’s lifetime — describe the chant as a form of cosmic praise, a way of aligning the ritual space with the harmonics of the celestial realm. A priest who could perform it well was not simply a skilled singer. He was someone who could, in the Daoist understanding, actually open that alignment.
The Jiao Ceremony
Alongside his buxu mastery, Cao Bao was deeply versed in the jiao ceremony (醒) — the grand communal offering ritual that is one of the most structurally complex and liturgically demanding forms of Daoist practice. A jiao is not a single event but a multi-day sequence of rituals involving the purification of the ritual space, the summoning of divine officials, the presentation of memorials to the heavenly bureaucracy, and the final dispersal of blessings to the community.
Performing a jiao well requires not just knowledge of the ritual forms but the ability to coordinate them across time, to maintain the correct internal state throughout, and to manage the relationship between the visible ceremony and the invisible processes it is understood to set in motion. Cao Bao’s reputation for mastery of both jiao and buxu suggests a practitioner of exceptional breadth — someone who understood the liturgical tradition from its sonic surface to its cosmological foundations.
What This Kind of Mastery Looks Like from the Inside
The Zhengyi (正一) tradition has always understood liturgical mastery as a form of spiritual attainment, not merely a technical skill. The priest who performs buxu well is not just producing beautiful sound — he is, in the Daoist understanding, creating a genuine opening between the human and the divine. The quality of that opening depends on the quality of the priest: his training, his moral standing, his inner cultivation, his understanding of what the ritual is actually doing.
Cao Bao’s reputation as unrivaled in the two capitals was, in this framework, a statement about more than his voice. It was a statement about who he was as a practitioner. The Zhengyi priests at Longhu Mountain (龙虎山) today perform the same jiao ceremonies and buxu chants that Cao Bao mastered fifteen centuries ago. The forms have been refined and transmitted across generations; the understanding of what they are for has not changed.
If you find yourself drawn to the sonic and ritual dimensions of the Daoist tradition — the chanting, the ceremony, the carefully structured relationship between the human world and the divine — the history of figures like Cao Bao is a good place to start. This is a living tradition, not a historical artifact.
Related Concepts
- 步虚 (Bùxū, Void-Stepping Chant): the melodic chanting style unique to Daoist ritual, understood as a form of celestial music that aligns the ritual space with the harmonics of the divine realm; central to the Lingbao liturgical tradition and transmitted through the Zhengyi school to the present day
- 醒 (Jiāo, Offering Ceremony): the grand communal ritual of Daoist practice, involving multi-day sequences of purification, divine summoning, memorial presentation, and communal blessing; one of the most structurally complex forms of Daoist liturgy
- 灵宝传统 (Lingbao Tradition): the Daoist scriptural and liturgical tradition that emerged in the Eastern Jin period, introducing new forms of melodic chanting, cosmic ritual, and celestial bureaucracy that shaped Southern Dynasties Daoism and the subsequent development of the Zhengyi school
- 道学传 (Daoxue Zhuan, Biographies of Daoist Scholars): the biographical compilation attributed to Zang Jin that preserves accounts of Southern Dynasties Daoist practitioners, including Cao Bao; one of the primary sources for the history of this period
Source Texts
- Daoxue Zhuan (道学传, Biographies of Daoist Scholars) — a biographical compilation of Daoist practitioners from the Southern Dynasties period, attributed to Zang Jin.
- Taiping Yulan (太平御览, Imperial Encyclopedia of the Taiping Era), Volume 666 — a Song Dynasty imperial encyclopedia preserving excerpts from earlier texts, including biographical material on Daoist figures of the Southern Dynasties.
