Han Long Jing (Classic of Shaking Dragon): Yang Yunsong's Guide to Finding Dragon Veins in Feng Shui

Introduction: The Status of the Han Long Jing Within the Form School

The Han Long Jing (Classic of Shaking Dragon) is one of the masterworks of Tang Dynasty Feng Shui master Yang Yunsong (杨筠松, also known as Yang Jiupin). It stands as a foundational classic of the Form School (形势派, Xing Shi Pai) of Chinese Feng Shui. While the Zang Shu (Book of Burial) emphasizes burial methodology and the Qing Nang Jing (Green Satchel Classic) focuses on Li Qi (理气, compass energy) calculations, the Han Long Jing centers on the identification and survey of Dragon Veins (龙脉) — systematically explaining how to judge the auspicious and inauspicious qualities of a mountain range by observing its course, shape, and momentum.

The character "撼" (hàn) in the title means "to shake" or "to震撼," implying the tremendous and awe-inspiring power of Dragon Veins. By naming his work "Shaking Dragon," Yang Yunsong expressed both reverence for this power and confidence in the authority of his Dragon-seeking theory. Generations of Feng Shui masters have regarded this classic as required reading for the practice of Seeking Dragon and Pointing Acupoint (寻龙点穴), and it has exerted a profound influence on the development of the Form School.

Cultural Context: A "Dragon Vein" in Feng Shui refers to a continuous mountain range that channels Qi across the landscape. Much like the circulatory system of the human body, these geological arteries are believed to carry life-giving energy from high mountains down to the plains — making them the most auspicious places to build homes or bury ancestors.

Yang Yunsong's Scholarly Background

Yang Yunsong's Life

Yang Yunsong (834–900 AD), styled Yunsong with the courtesy name Yi and the sobriquet Jiupin, was a native of Douzhou in Tang Dynasty (modern-day Xinyi, Guangdong). Some sources, however, identify him as being from Ganzhou, Jiangxi. Yang served as Imperial Grand Master (国师) during the reign of Emperor Xizong of Tang, rising to the rank of Golden Purple Grand Master of Palace Leisure (金紫光禄大夫) and overseeing the affairs of the Imperial Astrological Bureau's geographic division.

After the Huang Chao Rebellion captured the Tang capital of Chang'an, Yang fled southward carrying the imperial Feng Shui archives as treasure. He settled in seclusion in Ganzhou, Jiangxi, where he began teaching Feng Shui to common people. His activities in the Ganzhou region played a pivotal role in shaping what became known as the Jiangxi School of Feng Shui. He accepted many disciples, generously sharing his knowledge and spreading Feng Shui widely among the people. Because he often selected auspicious burial sites for the poor without charge, the common folk respectfully called him "Mr. Jiupin" (救贫先生, "Savior of the Poor"). Many of his direct disciples and second-generation students became famous Feng Shui masters, giving rise to the highly influential "Jiangxi Form School."

Quick Tips:

• Yang Yunsong is revered as one of the "Three Great Masters" of Feng Shui, alongside Guo Pu and Lai Buyi
• His legacy transformed Feng Shui from an exclusive imperial art into a practical discipline for everyday people

Yang Yunsong's Writings

Yang Yunsong was a prolific author. According to the Siku Quanshu (Complete Library of the Four Treasuries) and bibliographic records through the ages, his works include the Han Long Jing, Yi Long Jing (Classic of Doubting Dragon), Qing Nang Ao Yu (Secret Sayings of the Green Satchel), Tian Yu Jing (Classic of Heavenly Jade), and Du Tian Bao Zhao Jing, among other classics. These works span both the Form School and the Compass School (理气派, Li Qi Pai), demonstrating Yang's comprehensive mastery of Feng Shui.

The Han Long Jing and Yi Long Jing are the masterworks of his Form School teachings, specifically addressing the identification and judgment of Dragon Veins. The Qing Nang Ao Yu and Tian Yu Jing, meanwhile, focus on the calculation methods of the Compass School and later provided crucial theoretical foundations for the Xuan Kong Flying Stars (玄空飞星) tradition.

The Core Content of the Han Long Jing

Classification of Dragon Veins

The Han Long Jing provides a systematic classification of Dragon Veins — one of Yang Yunsong's most significant contributions to Feng Shui. He categorized Dragon Veins in several ways:

First, by mountain scale — "Trunk Dragon" (干龙) and "Branch Dragon" (支龙): The Trunk Dragon refers to the main mountain range, massive in momentum and stretching hundreds or even thousands of li. The Branch Dragon refers to smaller mountain ridges that branch off from the Trunk Dragon; though smaller in scale, these are often where the Acupoint (穴, where Qi converges) actually forms.

Second, by mountain vitality — "Living Dragon" (生龙) and "Dead Dragon" (死龙): A Living Dragon features undulating terrain with lush vegetation and vibrant energy — a sign of good fortune. A Dead Dragon appears rigid and barren, devoid of vegetation and life force — a sign of misfortune.

Third, by directional flow — "Forward Dragon" (顺龙) and "Reverse Dragon" (逆龙): A Forward Dragon runs in the same direction as the nearby water flow and is generally considered auspicious. A Reverse Dragon runs against or across the water flow and requires specific contextual analysis.

Quick Tips:

• In modern suburban settings, you can identify a "Living Dragon" by lush, rolling landscape and abundant greenery
• A "Dead Dragon" appears as bare, rocky terrain with sharp angles and no vegetation — avoid building on such sites

The Five Forces and Nine Stars

The Han Long Jing introduces the theory of the "Five Forces" (五势) — the five fundamental directional energies of a Dragon Vein: Direct Force (正势), Side Force (侧势), Reverse Force (逆势), Forward Force (顺势), and Returning Force (回势). Direct Force describes a Dragon Vein running from north to south — the most standard and auspicious course. Side Force runs from west to east; Reverse Force moves against the water; Forward Force follows the water; Returning Force curves back on itself like a coiling dragon.

The "Nine Stars" (九星) constitute another important theoretical tool in the Han Long Jing. Yang Yunsong classified mountain shapes into nine star types, each with distinct characteristics and auspicious or inauspicious properties:

• Greedy Wolf Star (贪狼星): Mountain shape like a bamboo shoot — sharp and tall; auspicious.
• Giant Door Star (巨门星): Mountain shape like a bell — square, solid, and dignified; auspicious.
• Lu Cun Star (禄存星): Mountain shape like a drum — rounded and full; mixed fortune.
• Literary Star (文曲星): Mountain shape like a serpent — sinuous and winding; governs literary/academic success.
• Lian Zhen Star (廉贞星): Mountain shape like fire — sharp and precipitous; inauspicious.
• Military Star (武曲星): Mountain shape like a ceremonial vessel — upright and stately; auspicious.
• Broken Army Star (破军星): Mountain shape broken and fragmented — disordered; inauspicious.
• Left Helper Star (左辅星): Mountain shape like an official's headwear — supporting and protective; auspicious.
• Right Helper Star (右弼星): Mountain shape like outstretched wings — hidden but present; neutral.

Cultural Context: The Nine Stars system is one of the oldest mountain-classification frameworks in Feng Shui. Practitioners memorize the characteristic shape of each star so they can quickly identify mountain types during field surveys — much like a botanist identifies trees by leaf shape at a glance.

Methods for Seeking Dragon and Pointing Acupoint

The Han Long Jing details the practical methods of Seeking Dragon and Pointing Acupoint (寻龙点穴). Yang Yunsong taught that seeking a Dragon first requires "recognizing the Dragon" — the ability to discern the course and form of a mountain range. He summarized the "Ten Essentials" (十要) of Dragon-seeking: the Dragon must be true (龙真), the Acupoint must be accurate (穴的), it must be embraced by surrounding hills (砂环), embraced by water (水抱), with proper facing (朝对), a Bright Hall (明堂) must be present, a Water Mouth (水口) must be favorable, with Dragon and Tiger hills (龙虎) flanking the site, and with both a Desk Mountain (案山) and Facing Mountain (朝山) in view.

For pointing the Acupoint, Yang emphasized that determining the exact site requires the combined assessment of incoming Dragon, surrounding Sand, Water, and Direction. He proposed the "Four Applications" (四用) method: first, "Observing Qi" (望气) to assess the Dragon's momentum; second, "Inspecting Form" (察形) to examine terrain features; third, "Watching Water" (观水) to judge the flow's direction and quality; and fourth, "Setting Direction" (定向) to determine the structure's facing orientation.

Remember: Feng Shui seeks to balance Yin and Yang energies — the dual forces that shape all existence.

How to Apply the Ten Essentials Today

Even without mountains and rivers, you can apply these principles to your modern home:

1. Dragon True: Ensure your home has solid "backing" — tall buildings, hills, or walls behind it that channel protective energy
2. Acupoint Accurate: Identify the quietest, most centered spot in your home — this is your energetic heart
3. Sand Embracing: Check that surrounding structures (neighboring homes, fences, hedges) create a gentle embrace — not gaps
4. Water Embracing: Look for curved pathways, rounded driveways, or actual water features in front of your home
5. Facing Properly: Ensure your main entrance faces a welcoming, open view — not directly into a wall or sharp object
6. Bright Hall: Maintain a clear, well-lit entry area where energy can pool before entering your home
7. Water Mouth: Identify where energy exits your property — keep this area calm and controlled
8. Dragon and Tiger: Verify balanced structures on both sides of your property (one slightly taller is ideal)
9. Desk Mountain: Look for a moderate-height feature (small hill, low building) close in front of your home
10. Facing Mountain: Identify a prominent, protective feature in the distance directly facing your home

The Essential Chapters of the Han Long Jing

On the Trunk Dragon and Branch Dragon

A famous passage from the Han Long Jing reads: "When seeking a Dragon, first identify its ancestors. The taller and grander the ancestor mountain, the more powerful the descendant Dragon. The Trunk Dragon's journey must have undulations; the Branch Dragon's junction with the trunk must be clearly defined." (大凡寻龙先认宗，祖宗高大子孙雄。干龙行度有起伏，支龙接脉要分明。)

This passage emphasizes that Dragon-seeking begins with identifying the ancestor mountain — the source and main artery of the Dragon Vein. The taller and more majestic the ancestor mountain, the more vigorous the Dragon's momentum, and the more powerful the descendant ranges. Yang further noted that the Trunk Dragon's course must feature undulations — it cannot be flat as a board, nor relentlessly steep. An undulating, lively Dragon is one capable of forming an Acupoint. The junction where Branch Dragons connect with the Trunk must be clearly defined; if it is blurred, Qi cannot be transmitted smoothly.

On the Five Stars and Nine Stars

The Han Long Jing combines the concept of the Five Elements with mountain shapes, proposing the "Five Stars" theory: "Metal Star is rounded, Wood Star is tall, Water Star is curved, Fire Star is sharp, Earth Star is square." These five star types form the basic classification of mountain forms and serve as crucial criteria for judging Dragon Vein fortune.

Building on this foundation, Yang Yunsong further refined the Five Stars into the Nine Stars, creating a more detailed classification system. The Nine Stars theory directly links mountain shape to auspicious or inauspicious attributes, enabling Feng Shui practitioners to quickly evaluate a Dragon Vein's quality during field surveys. This method was widely adopted by later generations of the Form School and became a foundational skill in Dragon-seeking practice.

On the Relationship Between Water Methods and Dragon Veins

The Han Long Jing also offers penetrating insights into the relationship between Water methods and Dragon Veins. Yang Yunsong viewed water as the "bloodline" of the Dragon Vein — the flow's direction and shape directly reflects the Dragon's course and condition. He declared: "Water follows the mountain; the mountain turns with the water. Where mountains embrace and water surrounds, a true Dragon must be present." (水随山行，山随水转。山环水抱，必有真龙。)

This viewpoint underscores water's central importance in Dragon-seeking. Yang believed that finding a Dragon Vein requires examining both mountain and water. A good Dragon Vein is always accompanied by a harmonious water system; places where mountains and water intertwine in mutual embrace are typically where the Dragon forms its Acupoint.

Quick Tip: When evaluating a property, observe how water (literal or symbolic — driveways, pathways, roof lines) flows around it. Gentle curves and enclosed flow indicate favorable conditions; straight lines that rush away suggest energy leakage.

The Scholarly Value and Influence of the Han Long Jing

Influence on Form School Feng Shui

The Han Long Jing is one of the most central classics of the Form School. It systematized and theorized the identification and judgment of Dragon Veins, elevating Form School Feng Shui from an experience-based craft into a discipline with a complete theoretical framework. Song Dynasty Form School masters such as Liao Yu (廖瑀, also known as Liao Ming) and Wu Jingluan (吴景鸾) all developed their theories on the foundation of the Han Long Jing.

The Han Long Jing exerted a direct influence on the later Jiangxi School of Feng Shui. With Yang Yunsong as its patriarch and Ganzhou as its center, the Jiangxi School became one of the most important branches of Chinese Feng Shui. The Jiangxi School emphasizes on-site investigation and insists that the Dragon must be true and the Acupoint accurate — principles and methods derived largely from the Han Long Jing.

Influence on Folk Feng Shui Practice

The Han Long Jing has had an extraordinarily wide influence on popular Feng Shui practice. The Nine Stars and Five Forces theories from this text became fundamental tools for folk Feng Shui masters engaged in Seeking Dragon and Pointing Acupoint. Even today, in an age of abundant information, many Feng Shui practitioners still use the classification methods and judgment standards from the Han Long Jing when conducting field surveys.

The Han Long Jing also shaped traditional customs of site selection (相地). In traditional society, when selecting a home site or burial location, people would often invite Feng Shui practitioners to evaluate the terrain using methods from the Han Long Jing. While such customs carry elements of superstition, they also reflect the ancient people's deep understanding of and adaptation to the natural environment.

Conclusion

The Han Long Jing, as Yang Yunsong's representative work, stands as a classic of the Form School of Chinese Feng Shui. It systematically addresses the classification, identification, and judgment of Dragon Veins, providing later generations of practitioners with an operational guide for Dragon-seeking. Although certain theories in the Han Long Jing carry mystical overtones, its methods of observing and classifying nature reflect a profound understanding of the geographical environment. In contemporary society, we should re-examine the theoretical value of the Han Long Jing with a scientific attitude — taking its essence and discarding its dross — so that this ancient cultural heritage may shine with renewed vitality in the modern world.

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