Quick Answer: What Is a Chinese Thread-Bound Book?
A Chinese thread-bound book uses thread binding (线装, xiànzhuāng) to join folded paper leaves and covers. Thread passes through a row of holes close to the spine. The folds of the leaves face the other way, forming the edge where the reader turns the pages. [1][2][4]
- Paper: A sheet printed on one side folds with the print outward.
- Sewing: The thread crosses the spine edge and passes through the stack.
- Covers: Separate front and back pieces leave the sewing visible. [1][2][4]
On a closed book, look for the row of thread at one edge and the closely stacked folds at the opposite edge.
What looks like a narrow column of text at the edge of a page was once the center of a printed sheet. When the binder folds the sheet, that column moves to the outside of the stack. How a reader finds a leaf therefore depends on a decision made before the book was sewn.
Why the Page Fold Is at the Outer Edge
A traditional sheet printed on one side can carry two page faces. The binder folds along the middle so the printed faces remain outside and the blank side is inside. The fold forms the fore-edge. The two cut edges face the spine. The stitches catch both layers together near those edges. This links the finished binding to the layout used in Chinese woodblock printing. [1][3][4]
The National Library of China describes a central column that may carry a short title, a section number, a leaf number or a fishtail marking the fold line. When the sheet becomes a double leaf, that center column remains visible close to the fold. That matters when a work is issued in several separately bound parts. A small printed number on the fold can help place a loose leaf back in sequence. [3][4]
What Holds the Pages and Covers Together
Binders sometimes held the stack together with twists or pegs made of paper. Those fasteners stay inside the binding. The separate covers are laid against the first and last leaves. A thread, often silk in the books described by the Bodleian, passes through holes in the covers and stack. [1][2][4]
Four-hole sewing is familiar, but six-hole bindings also occur. The openings go through the side margin close to the spine. They leave room for the text on the page face. The paper has to bend near the sewn margin as a reader turns a leaf. Thin, flexible sheets make that possible while the printed faces stay outside each folded leaf. [1][2][4]
How Thread Binding Spread and Changed
Thread sewing is documented on some early Dunhuang manuscripts. Scholars differ on whether those examples directly anticipate the later standard form. The developed binding became common after the middle of the Ming dynasty and remained in use through the Qing and into the twentieth century. [1][2][6]
Wrapped-back binding also puts the folded edges at the fore-edge. A single cover wraps over the spine and hides the inner paper fasteners. Separate covers and exposed sewing identify thread binding on a volume whose page folds may look much the same. Those features describe the book’s present structure. A volume may have acquired a new cover and sewing later in its history, as the Cambridge study shows. [2][5]
What Conservators Preserve
Françoise Richard documents a Chinese printed book in St John’s College Library with six fascicles in a blue textile-covered wrapper. One illustrated fascicle has a brown paper cover, a title slip and four silk-thread holes. The wrapper encloses the set. It can be opened to take out one fascicle while the remaining parts stay individually bound. [4]
A Bodleian project found that a tight wrapper had distorted the four fascicles of a different book, Sinica 2887. New housing supported the volumes while preserving the original wrapper. The Bodleian notes that its current conservation approach is to repair existing covers where possible. Those covers can preserve the history of the particular copy. In China, thread binding belongs to the group of traditional bookbinding techniques entered on the national intangible heritage list in 2021. The National Library’s preservation program records techniques on video, maintains a collection of binding samples and brings the craft into schools. [1][7]
FAQs About Chinese Thread-Bound Books
Do all Chinese thread-bound books have four holes?
Four-hole sewing is common. The National Library of China also describes six-hole examples. Hole count is one feature of the binding and cannot date a book on its own. [2][4]
Which side is the spine of a Chinese thread-bound book?
With the front cover facing up and oriented for reading, a traditional Chinese book typically has its sewn spine at the right. The folded fore-edge is at the left. [1][4]
What is a fascicle in a thread-bound edition?
A fascicle is a separately bound physical part of a work. Several fascicles may fit in one wrapper. Each has its own leaves and covers. [1][4]
Sources
[1] Bodleian Libraries. Conservation of Chinese Books
[2] Song Jing, National Library of China. A Short History of Chinese Bookbinding Formats
[3] National Center for Preservation and Conservation of Ancient Books. The Layout of Chinese Rare Books
[4] Françoise Richard, IFLA. From China to Cambridge: Modification of Rare Chinese Printed Books
[5] The Palace Museum. Wrapped-Back Binding
[6] Du Weisheng, as reported by The Paper. A Lecture on Traditional Chinese Bookbinding
[7] China Intangible Cultural Heritage Network. Traditional Bookbinding Techniques