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Sima Chengzhen

Also known as: Baiyunzi, Tiantai Baiyunzi, Daoyin, Sī mǎ chéng zhēn

Definition

Sima Chengzhen (647–735) was a Tang Daoist scholar of the Shangqing tradition, associated with Mount Tiantai, Mount Wangwu, and the imperial court. Writings attributed to him discuss restraint of the mind and zuowang, or sitting in forgetfulness. His life, textual attributions, and later influence require separate evidence.

Knowledge guide

Sima Chengzhen: Shangqing and Sitting in Forgetfulness

Sima was neither merely a court priest nor only an exponent of zuowang. He learned within a Shangqing lineage, lived for long periods in mountain settings, and answered repeated court invitations. His writings organized ethical discipline, attention, insight, and stillness into a historical Daoist discourse.

Four paths into Sima's life and work

Each path has its own sources; an anecdote cannot stand for the whole life.

Tang Daoist scholarSima Chengzhen

A figure connecting Shangqing transmission, mountain practice, and imperial patronage.

Lineage

Pan Shizheng and Shangqing

Traditional biographies place his training after the earlier Shangqing masters.

Place

Tiantai and Wangwu mountains

Mountain residence shapes the image of a scholar-priest apart from court.

Writings

Zuowang and disciplined attention

The Zuowang Lun gives an ordered account of mental and ethical cultivation.

Court

Imperial invitations

Encounters with Tang rulers show the public standing of prominent Daoists.

A life across mountains and court

Dates and gifts are reported in biographies; authorship needs separate textual study.

  1. 01
    647

    Born near Wen County

    Later biographies give his origins, courtesy name Ziwei, and religious name Daoyin.

  2. 02
    Late seventh century

    Studies under Pan Shizheng

    He enters a Shangqing succession and becomes associated with Tiantai.

  3. 03
    Wu Zhou era

    Early court invitation

    Accounts of an imperial summons begin a pattern of court contact.

  4. 04
    711

    Meeting with Emperor Ruizong

    Biographies record discussion of Dao and governance, followed by a return to the mountains.

  5. 05
    About 721–727

    Xuanzong and Yangtai Temple

    Court patronage and Wangwu Mountain become central to later accounts.

  6. 06
    After 735

    His writings continue to circulate

    The Zuowang Lun becomes important for studying Tang Daoist accounts of the mind.

Person, text, and attribution

A biographical subject and texts associated with him need different kinds of verification.

01

Historical Sima

Meaning
A Tang priest with reported teachers, residences, and court contacts.
Focus
Biography and Shangqing history.
Distinction
Court anecdotes should be checked against their sources.
02

Zuowang Lun

Meaning
A work discussing attention, insight, stillness, and zuowang.
Focus
Its argument and terminology.
Distinction
Not a modern psychological protocol.
03

Tianyinzi

Meaning
A shorter text often connected with Sima in tradition.
Focus
Textual development and attributed authorship.
Distinction
Attribution must be evaluated by version and bibliography.

Where to go next

Read Sima's biography with the Zuowang Lun, then compare Shangqing lineage and the Tianyinzi attribution.

Names and variants

Simplified
司马承祯
Traditional
司馬承禎
Other names
Si Ma Cheng Zhen, Baiyunzi, Tiantai Baiyunzi, Daoyin
Pinyin
Sī mǎ chéng zhēn
English
Sima Chengzhen

Source material and earlier definitions

English textThe reviewed English overview and source notes remain available below1 section · 263 words

Sima came from Wen in the Henei region, in present-day Henan. He studied with Pan Shizheng and received Shangqing teaching. After travelling among sacred mountains, he lived on Mount Tiantai and became known as Baiyunzi. His religious formation placed him within a tradition of transmitted teaching rather than making him the founder of Daoist meditation.

Tang rulers invited him to court. The source records an audience with Ruizong in 711 in which Sima emphasized wuwei in government, and further contact with Xuanzong. Imperial patronage later supported his residence at Yangtai Guan on Mount Wangwu. These encounters connect mountain religious life with the court's interest in Daoist authority and teaching.

His account of cultivation gave sustained attention to settling the mind, reducing distracting desires and understanding one's relation to the Dao. The source presents this teaching as drawing on Daoist thought while engaging Confucian and Buddhist approaches to the mind. Such engagement does not erase the Daoist religious setting or make the three traditions identical.

Zuowang is central to his later reputation. His treatment placed self-forgetting within an ordered account of cultivation, connecting mental stillness with religious attainment. Qingjing and cunsi provide related vocabulary for understanding this setting, though the concepts should not be collapsed into one interchangeable technique.

Sima was also remembered for calligraphy and a circle of disciples that included Li Hanguang and Xue Jichang. His significance extends beyond one cultivation concept: it includes teaching, the transmission of Shangqing traditions and the cultural life of Tang Daoism. Religious claims of immortality in accounts of his teaching describe its aims, not verified outcomes.

References

  1. [1]
    Dictionary of Daoism