science

Xuan paper

Xuan paper 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 Xuan paper rather than just read about it. In short: Xuan paper, Shuen paper, or rice paper, is a kind of paper originating in ancient China used for writing and painting. Xuan paper is renowned for being soft and fine-textured, suitable for conveying the artistic expression of both Chinese calligraphy and painting.

Key takeaways

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

Reference excerpt

Xuan paper, Shuen paper, or rice paper, is a kind of paper originating in ancient China used for writing and painting. Xuan paper is renowned for being soft and fine-textured, suitable for conveying the artistic expression of both Chinese calligraphy and painting.

Origin Xuan paper was first mentioned in ancient Chinese books Notes of Past Famous Paintings and New Book of Tang. It was originally produced in the Tang dynasty in Jing County, which was under the jurisdiction of Xuan Prefecture (Xuanzhou), hence the name Xuan paper. During the Tang dynasty, the paper was often a mixture of hemp (the first fibre used for paper in China) and mulberry fibre. By the Song dynasty, the paper producing industries in Huizhou and Chizhou were gradually transferred to Jing County.

Classification Due to different producing methods, Xuan paper can be classified into Shengxuan, Shuxuan, and Banshuxuan. Shengxuan (literally "Raw Xuan"), which is not specially processed, excels in its ability to absorb water, causing the ink on it to blur. Shuxuan (literally "Ripe Xuan"), however, has a sizing based on potassium alum applied to the paper during production, which results in a stiffer texture, a reduced ability to absorb water, and less resistance to shear stress (meaning that it can be torn much more easily). This feature makes Shuxuan more suitable for Gongbi rather than Xieyi. Banshuxuan (literally "Half-ripe Xuan") has intermediate absorbability, between Shengxuan and Shuxuan.

Features Xuan paper features great tensile strength, smooth surface, pure and clean texture and clean stroke, great resistance to crease, corrosion, moth and mould. The majority of ancient Chinese books and paintings by famous painters that survived until today are well preserved on Xuan paper. Xuan paper won the Golden Award at the Panama International Exposition in 1915. Xuan paper was used to make scrolls.

Material and production The material Xuan paper uses is closely related to the geography of Jing County. The bark of Pteroceltis tatarinowii, a common species in the area, was used as the main material to produce Xuan paper. Rice along with several other materials were subsequently added to the recipe, during the Song and Yuan dynasties. Bamboo and mulberry also began to be used to produce xuan paper around that time. The production of Xuan paper can be loosely described as an 18-step process, but a detailed account would involve over a hundred steps. Some paper makers have invented steps which have been kept secret from others. The process includes steaming and bleaching the bark of Pteroceltis tatarinowii as well as the addition of a variety of juices.

See also Rice paper Dó paper Samarkand paper

References

Anhui Xuan paper on chinaculture.org, retrieved on 2009-02-08. (in Chinese) Xuan paper at Anhui Online Library, retrieved on 2009-02-08.

Illustrations

Worked examples

Example 1 — a first encounter with Xuan paper

Start with the simplest possible case. Write down what Xuan paper 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 Xuan paper 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 Xuan paper 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 Xuan paper

In research: Xuan paper 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 Xuan paper 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: Xuan paper is common in secondary-school and first-year university syllabi. It links to neighbouring topics Chinese calligraphy, Chinese inventions, Chinese painting, so understanding it makes those chapters shorter.
In everyday life: Look for Xuan paper 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 Xuan paper in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Xuan paper 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 Xuan paper out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Xuan paper in simple terms?

Why does Xuan paper 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 Xuan paper?

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 Xuan paper.