Wu Yun (吴筠): The Sage of Hua Mountain, Hermit of the Tang

Wu Yun (吴筠): The Sage of Hua Mountain, Hermit of the Tang

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Wu Yun (?–778), styled Zhenjie, was a native of Huayin in Huazhou (present-day Huayin, Shanxi Province) and a renowned Taoist priest of the Tang Dynasty.


From a young age, Wu Yun was proficient in classical texts and excelled in literary composition. By nature, he was noble and aloof; even though he failed to pass the imperial examinations for officials, he had no desire to drift along with the mundane world. Later, he went to Mount Song in Henan, where he studied the Shangqing scriptures and methods under the tutelage of Pan Shizheng.


During the Kaiyuan period of the Tang Dynasty (713–741), Wu Yun traveled south to Jinling (present-day Nanjing, Jiangsu Province) to seek Taoist teachings at Mount Mao. He then visited Mount Tiantai in Zhejiang, befriending scholars of repute. Later, his essays and poems spread to the imperial capital, and Emperor Xuanzong, impressed by his literary talent, sent someone to summon him to the Datong Hall in Chang’an, appointing him as a Hanlin Daizhao (a court attendant with literary duties).


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In his later years, Emperor Xuanzong grew increasingly muddle-headed, allowing the treacherous prime ministers Li Linfu and Yang Guozhong to monopolize power, leading to chaos in state affairs. Wu Yun foresaw that great turmoil would engulf the realm, so he pleaded to return to Mount Song, but Emperor Xuanzong repeatedly refused. During the Tianbao period (742–756), when An Lushan’s signs of rebellion became evident, Wu Yun again requested to return to Mount Mao, and this time the emperor finally agreed.


However, after the outbreak of the An-Shi Rebellion, the Central Plains fell into chaos, making it impossible for Wu Yun to stay. He had to flee east to Kuaiji, taking refuge in Shanzhong (present-day Shengxian County, Shaoxing, Zhejiang Province). After the rebellion was suppressed, Wu Yun traveled east to Tianzhu Mountain, southwest of Yuhang, where he resided in Tianzhu Guan (Tianzhu Temple) at the foot of the mountain. There, he devoted himself to Taoist practice and scholarship, composing numerous works. Historical records note that “while residing at Tianzhu Guan, he attained profound insights through intense contemplation and propagated his teachings along the Yangtze and Han Rivers. His literary works were on par with those of Li Bai.”


In the 13th year of Dali (778), Wu Yun passed away at a Taoist temple in Xuancheng. He was buried at the western foot of Tianzhu Mountain, and was privately posthumously titled “Mr. Zongyuan.”


Key Life Events & Contributions

1. Early Years: From Scholar to Hermit

  • Born into a literati family, Wu Yun studied the Confucian Classics but soon grew disillusioned with worldly pursuits. He said:

    "Riches are but morning dew;
    Fame, a shadow at noon.
    Only the Tao endures."

  • By his 20s, he retreated to Hua Mountain (Mount Hua), one of China’s Five Sacred Peaks, to live as a recluse. There, he:
    • Practiced neidan (internal alchemy)
    • Studied the I Ching and Zhuangzi
    • Composed poetry in the wilderness

2. The Imperial Summons: A Reluctant Courtier

In 744 CE, Emperor Xuanzong (r. 712–756), a devout Daoist, heard of Wu Yun’s wisdom and summoned him to Chang’an (modern Xi’an). The emperor pleaded:

"Your teachings could save this realm!
Stay, and I will make you a national teacher."

Wu Yun accepted but remained detached. He lived in a simple courtyard, refusing luxuries, and taught:

"A ruler’s power is like a river—
It nourishes only when it flows gently."

After three years, he resigned, saying:

"The court is a cage;
The mountains, my true home."

3. Final Years: The Hermit of Dongyan

Wu Yun returned to Dongyan (Eastern Cliff), a secluded valley near Hua Mountain, where he:

  • Wrote his major works (see below)
  • Taught a handful of disciples
  • Meditated under the "Pine of Stillness" (a 1,000-year-old tree he claimed "whispered the Tao")

He passed away peacefully in 778 CE, leaving a legacy as one of Tang Daoism’s most respected figures.


III. Intellectual Legacy: Poetry, Philosophy, and Alchemy

1. Major Works

Title Theme Key Idea
"Vigorous Virtue" (《玄纲论》, Xuán Gāng Lùn) Daoist ethics & governance "Rule by doing nothing; lead by example."
"Celestial Keys" (《天隐子》, Tiān Yǐn Zǐ) Internal alchemy & immortality "The body is a temple; the spirit, its flame."
"Mountain Verses" (《山居赋》, Shān Jū Fù) Nature poetry & solitude "A rock’s silence speaks louder than a king’s decree."

2. Philosophy: The Middle Way

Wu Yun rejected extremes—neither asceticism nor indulgence. He taught:

"The Tao is like water:
It flows around obstacles,
Yet carves mountains over time."

His ethics emphasized:

  • Humility: "A full cup spills; an empty one receives."
  • Compassion: "To harm another is to harm oneself."
  • Simplicity: "Wealth is a burden; poverty, freedom."

3. Alchemy & Longevity

Unlike some Daoists who sought physical immortality, Wu Yun believed:

"The true elixir is not in a crucible—
It is in the harmony of heart and mind."

He practiced:

  • Qigong (breath control)
  • Dietary restraint (avoiding meat and alcohol)
  • "Sitting in forgetfulness" (zuowang), a meditation technique

IV. Circle of Influence: Disciples & Peers

1. Notable Disciples

Name Role Famous Quote
Li Bai (李白) Poet & Friend "Wu Yun’s words are like mountain springs—clear, cold, and endless."
Sima Chengzhen (司马承祯) Fellow Daoist Master "In silence, we understand; in words, we lose."

2. Connection to Emperor Xuanzong

Wu Yun’s teachings influenced the emperor’s policies, including:

  • Environmental protection: Banning logging near sacred mountains.
  • Religious tolerance: Supporting Buddhism and Daoism equally.
  • Humane governance: Reducing taxes during famines.

V. Final Reflection: Why Wu Yun Matters Today

  • For leaders: His ethics remind us that power must be tempered with wisdom.
  • For seekers: His poetry shows that nature is the best teacher.
  • For all: His life proves that true freedom lies in simplicity.

A Poem by Wu Yun (translated with care):

"The moon does not fight the night—
It shines, and darkness flees.
So too should the wise man live:
Not by force, but by being."

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