The Duijin: The Symmetrical Closure of Traditional Dress

短裤 (duǎn kù), literally "short trousers," refers in the context of traditional Chinese clothing to the shorter leg coverings worn beneath or instead of the long, voluminous trousers (裤, kù) that accompanied most historical dress. While full-length hanfu trousers often reached the ankles and were gathered at the waist and hem, shorter variants—whether for labor, for layering in warm weather, or as underwear—have a long and quietly important place in the Chinese wardrobe. This article looks at how short legwear functioned across dynasties, how it differed from the long 裤, and what it tells us about comfort, class, and changing notions of modesty.

Defining the Terms: 裤, 褌, and 短裤

The general word for trousers in Chinese is 裤 (kù). Ancient texts distinguish the 袴/褲, which originally could mean a kind of maogua or leg-wrap, from the 褌 (kūn), a close-fitting pair of shorts or under-breeches worn next to the skin. The 短裤 as a category sits at the shorter end of this spectrum: leg coverings that stop above the knee or mid-thigh.

It is important to remember that, for most of Chinese history, what one wore on the legs was hidden beneath a long robe or a 裳 (skirt-like lower garment). Short trousers were therefore usually an under-layer or a work-layer, not something displayed in polite company.

Only in the twentieth century, with the adoption of Western dress and the decline of the robe, did exposed short trousers become ordinary street wear in China.

Early Trousered Garments

Archaeological finds from the Tarim Basin and from Han dynasty (206 BCE–220 CE) tombs show that trousers of various lengths were worn in the north and northwest, where horse riding made split legs practical. Riders needed garments that did not tangle in the saddle, so close legwear—sometimes quite short—was functional armor against chafing.

The 褌, a tight short undergarment, is mentioned in early medical and moral texts, where it is treated as basic bodily covering. Its brevity was a matter of hygiene and ease rather than fashion.

In the humid south, shorter legwear also made sense for rice-field labor, though the dominant outer look remained the long robe or skirt for the respectable classes.

Short Trousers as Underwear

Through the imperial period the short 裤 functioned primarily as underwear beneath the long outer trousers or beneath a robe. A person of means might wear several layers: an inner short pair, an outer long pair, and then the robe or skirt on top. This layering trapped warmth in winter and allowed the outer layers to be changed while keeping a clean base.

Children, who were less bound by courtly dress codes, commonly wore short trousers in warm months, often with the chest bared—an image familiar from folk prints of chubby babies and 胖娃娃.

The short under-breech thus did invisible but essential work: it was the garment closest to the body in a culture that valued layered, concealing dress.

Laborers and the Short Leg

For farmers, boatmen, and porters, short trousers were simply practical. Rolling the long 裤 up to the knee was common in the fields, and some working dress was cut short to begin with. Cooler legs meant easier movement in mud and water, and less cloth meant lower cost.

Military and martial-arts dress also favored shorter legwear for mobility, often paired with wrapped leggings (绑腿, bǎng tuǐ) to protect the shins. The 短打 (duǎn dǎ)—the short, functional tunic-and-trousers outfit of servants and fighters—was built around this logic of unencumbered limbs.

In opera and fiction, the 短打 costume signals a nimble commoner or warrior, distinguishing him from the long-robed scholar or official.

Materials for Everyday Legwear

Short trousers for the poor were typically hemp (麻, má) or ramie (苎, zhù), coarse but breathable. The well-off used cotton after it spread in the Ming dynasty, and silk for the finest underlayers. Color was usually plain—white, undyed, or indigo—since hidden garments did not need display.

Waistbands were drawn and tied with a string rather than tailored with buttons, allowing the same pair to fit different bodies. This adjustable construction is a hallmark of traditional Chinese trousers of every length.

Because short trousers were hidden, their construction could be humble; durability and washability mattered more than ornament.

The 短打 Working Outfit

The 短打 (literally "short strike") is the umbrella term for the compact, action-oriented clothing of servants, runners, and martial artists: a short jacket (sometimes the 裋褐, shù hè) and short or rolled trousers. It represents the anti-formal end of the clothing system.

Where the long robe proclaimed leisure and rank, the 短打 proclaimed usefulness and toil. It was the daily dress of the majority of the population even as sumptuary laws tried to push longer, grand garments upward in society.

Modern wuxia (martial-arts) costume design draws directly on the 短打 vocabulary, so the short trouser remains visually alive in film and television.

Modesty and the Hidden Leg

A key point about short trousers in traditional China is that they were almost never seen. Confucian and later norms emphasized covering the body; exposing the legs was associated with either labor or impropriety. A gentleman in a full robe revealed nothing below the waist.

This is why short legwear is sparse in portrait painting: it belonged to the private and the humble. When it does appear, it is on children, laborers, or comic figures, never on the idealized gentleman or lady.

The transition to visible shorts in the twentieth century therefore marked a real shift in Chinese attitudes toward the body and the public display of limbs.

From Underwear to Sportswear

In the Republic and PRC periods, Western-style shorts entered China as athletic and military wear. Physical-education classes, the army, and swimming all required brief legwear that would have been unthinkable in public a generation earlier.

By the late twentieth century, shorts were standard summer dress for men, women, and children across the country, decoupled from their old role as hidden underwear. The word 短裤 came to mean exactly the garment familiar worldwide.

Yet the traditional logic survives in the 睡裤 (sleep trousers) and in the layered sensibility of hanfu enthusiasts, who still put a short base under a long outer pair.

Short Trousers in the Hanfu Context Today

Among hanfu revivalists, short trousers are mostly a practical base layer or a warm-weather concession rather than a showcased piece. Some wearers adopt the 短打 look deliberately to evoke the martial or rustic past.

Makers sell "汉服短裤" as comfortable inner wear suited to the wide-legged outer 裤, preserving the old layered system while meeting modern comfort needs.

This quiet continuity—short legwear as the hidden foundation—shows how even the most invisible garments carry the memory of a dress tradition.