science

Zheng Gu Shui

Zheng Gu Shui is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Zheng Gu Shui rather than just read about it. In short: Zheng Gu Shui (Chinese: 正骨水; lit. 'bone-setting liquid') is a traditional Chinese liniment. This external analgesic is believed to relieve qi and blood stagnation, promote healing, and soothe pain.

Key takeaways

Zheng Gu Shui belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Zheng Gu Shui to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Zheng Gu Shui from memory before moving on to harder problems.

Reference excerpt

Zheng Gu Shui (Chinese: 正骨水; lit. 'bone-setting liquid') is a traditional Chinese liniment. This external analgesic is believed to relieve qi and blood stagnation, promote healing, and soothe pain. The formula falls into the category of dit da jow in Cantonese or die da jiu in Mandarin. The liniment was used to treat fractures, broken bones and injuries suffered in combat. It is used today by practitioners of Chinese medicine to treat pain or trauma from backache, arthritis, strains, bruises, and sprains. It should neither be used on open wounds nor swallowed. Zheng Gu Shui is also used by people who suffer from achy feet from long-time standing or people who suffer from Plantar Fasciitis by applying with a cotton ball and letting air dry before putting on socks and shoes. Due to its nature, it can stain clothing if not dried properly. Stains generally can be removed with a small amount of alcohol.

Contents

Fratkin formula The ingredients in Fratkin's formula for Zheng Gu Shui are listed as follows (percentages are exact):

Pseudoginseng 25% Croton seed 18% Cinnamon bark 13% Angelica root 13% Gentiana 12% Inula flower 12% Menthol crystal 3% Camphor crystal 2% Alcohol is the base liquid to pull out the alkaloidal constituents.

Export formula The export form obtained via Solstice, bearing the Yulin 玉林 trademark, lists as active ingredients:

Camphor 5.6%, Menthol 5.6%. And as inactive ingredients:

Alcohol, Japanese knotweed (Polygonum cuspidatum Siebold & Zucc.) rhizome, paniculate swallowwort [Pycnostelma paniculatum (Bge.) K. Schum.] root, shin-leaf prickly ash [Zanthoxylum nitidum (Roxb.) DC.] root, water, zedoary rhizome. Note: Curcuma phaeocaulis, which is used in the Pharmacopoeia form below, is known to have been misattributed as zedoary (Curcuma zedoaria) in the past.

Chinese Pharmacopoeia formula

† = Monograph for material not found in 2020 Edition of the Chinese Pharmacopoeia The 2020 Edition of the Chinese Pharmacopoeia calls for an alcoholic extraction of the 26 above materials. The ratio is not specified, which is customary for formulas involving "state secret technology". The function and purpose of the formula according to the Chinese Pharmacopoeia is:

活血祛瘀，舒筋活络，消肿止痛。用于跌打扭伤，骨折脱位以及体育运动前后消除疲劳。 Activates blood circulation and removes stasis, relaxes tendons and activates collaterals, reduces swelling and relieves pain. Used for sprains and contusions, fractures and dislocations, as well as eliminating fatigue before and after physical exercise.

History The formula found in Chinese Pharmacopoeia was contributed by Chen Shanwen, an ex-Kuomintang military doctor of Major rank. He learned a bone-healing formula from his grandfather and specialized in TCM thereafter, creating a locally-famous Bo Gu Shui (Chinese: 驳骨水; lit. 'bone-grafting liquid'). He remained in China when the People's Republic was founded. He was given a post as a technician at Yulin Xinsheng Pharmaceutical Plant (later Yulin Pharmaceutical Plant) and worked his way up to become the vice director. During his time at the plant, he worked to reformulate Bo Gu Shui into a form suitable for mass-production, creating the modern Chinese Zheng Gu Shui.

References

Bibliography Clinical Handbook of Chinese Prepared Medicines by Chun-Han Zhu Chinese Herbal Patent Formulas by Jake Fratkin Traditional Chinese Medicine and the Athlete by Nicolas Miller Oriental Materia Medica: A Concise Guide by Hong-Yen Hsu Zheng Gu Shui's founding origins (Written in Mandarin Chinese)

Illustrations

Worked examples

Example 1 — a first encounter with Zheng Gu Shui

Start with the simplest possible case. Write down what Zheng Gu Shui claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Zheng Gu Shui before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Zheng Gu Shui ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Zheng Gu Shui

In research: Zheng Gu Shui appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Zheng Gu Shui in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Zheng Gu Shui is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ointments, so understanding it makes those chapters shorter.
In everyday life: Look for Zheng Gu Shui outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Zheng Gu Shui in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Zheng Gu Shui means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Zheng Gu Shui out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Zheng Gu Shui in simple terms?

Why does Zheng Gu Shui matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Zheng Gu Shui?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Zheng Gu Shui.