The primary source of continuity underpinning the psychic core of “Chinese-ness” – allowing the country to retain a coherent sense of self despite the wild oscillations of its political history – is arguably the written form of Chinese, hanzi, or Chinese characters. More than religion, architecture or cuisine, it is these characters that have stitched a unified tapestry out of the vast diversity of this empire-like civilisation.Yet, while hanzi have remained structurally continuous for over two millennia, the spoken language across China can vary to the point of mutual unintelligibility. The oral is fungible; the written character is almost platonic – a repository of meaning in its pure form. This is why, when a Chinese speaker is not understood, clarification often comes not through repetition but by their tracing the shape of the relevant character in the air.And yet, in the remote, hill-fringed villages of south-eastern Hunan, a secret script thrived for centuries: one that existed entirely outside the mainstream of hanzi and entirely within the subaltern domain of women. Knowledge of the very existence of Nüshu, the only known writing system in the world created and used exclusively by women, is remarkably recent. Its first encounters with the wider world came in the mid-20th century, when local cadres surveying literacy in the newly formed People’s Republic of China stumbled upon “mosquito-like,” elongated writings in letters and on embroidered on cloth.While the writing did not look entirely unfamiliar, it could not be deciphered by literate men. Inquiries amongst locals led to dead ends. Men typically dismissed the script as something trivial – “women’s writing” (女书) – undeserving of serious investigation. While women seemed reticent to share information. The upheavals of the Maoist decades meant that this early curiosity went largely unpursued.Illustration: Pariplab ChakrabortyIt was only in the 1980s that the linguist Gong Zhebing undertook systematic fieldwork in rural Hunan, tracking down elderly women who still knew the script, recording their songs and collecting their letters. By then, Nüshu was already in retreat, its “discovery” arriving at the very moment of its decline.The origin story of the script is hazy. The scholarly consensus today, is that Nüshu emerged gradually over generations in the villages of Jiangyong, developed by women who were denied formal education in Chinese characters. Given the pedagogical and social constraints that they had to contend with, these women ingeniously fashioned a phonetic script that allowed them to exchange stories, compose songs, and sustain personal bonds across the distances imposed by marriage.I met the Beijing-based, Hunan-born artist Tao Aimin at a café in Beijing’s 798 Art District in early April this year. The area, formerly a complex of state-owned munitions factories dating to the 1950s, has since been repurposed into an enclave of galleries and studios. For nearly two decades, Tao has incorporated Nüshu calligraphy into her work, treating it not as an archaic curiosity but as a living visual language that speaks in the voices of those who have historically been silenced.Also read: Liuyang, China, Illuminates the World With FireworksTao only heard of the script’s existence by accident, reading about it in a magazine in 2007. Intrigued, especially given that the language originated from an area close to her own hometown, Aimin made her way to Jiangyong county. It was so remote that the journey from Beijing took multiple bus trips over the course of three days. Upon arrival she was able to persuade an old lady in her 80s, Yi Youqi, to take her in for a few weeks, so that she could begin to learn the script.“When one thinks of Chinese art and poetry,” Tao told me, “It is always the male scholar-gentleman who comes to mind. In my work, I wanted to elevate a language invented by rural women, far removed from the literary canon.” What these women produced, she suggested, was rarely recognised as literature even by themselves: they composed songs, exchanged letters, and recorded stories from their daily lives, regarding them as unremarkable rather than as creative acts.Among the most striking artefacts Tao encountered were the so-called Third Day Missives (san zhao shu): hand-bound booklets filled with messages written by friends and female relatives, presented to a bride three days after her wedding. Part keepsake, part emotional archive, these texts resemble a record of shared intimacies – not unlike a school yearbook signed by classmates, filled with anecdotes and wishes for the future. They were treasured in private, brought out in moments of loneliness or nostalgia, and often destroyed when the woman died; either burned or placed in her coffin.These missives also illuminate the local practice of sworn sisterhood (jiebai), in which young women pledged enduring bonds of loyalty, an act that was almost as solemn, even as “romantic,” as a betrothal. The san zhao shu frequently contain messages from these sworn sisters, preserving bonds between women that extended beyond the strictures of marriage.One surviving example, written in verse, reads:Fate grants us the chance to form a pact of friendship.As the golden chicken faces the phoenix.Intelligent, gentle lady of the jade tower –Are you willing to make this tie?Nüshu texts commonly appeared in embroidered form, stitched onto fans, handkerchiefs, and belts, blurring the boundary between text and textile. But the language was not confined to the written script. It was also a vehicle for an oral culture that included narrative poems and songs. “Bridal laments” (nüge), sometimes referred to as “crying songs” (kuge), were sung at weddings as a bride prepared to leave her natal home, often for the last time.Since its documentation in the late 20th century, Nüshu has attracted considerable attention, including from Western scholars, who have often framed it as a “secret language”: a hidden code born of female oppression. This interpretation, while not entirely unfounded, risks forcing a complex reality into a reductive frame.As Tao emphasised, Nüshu was never truly secret. Men were generally aware of its existence; they simply ignored it. Categorised alongside embroidery or needlework, it was deemed unworthy of study. Its invisibility, then, was not enforced through concealment, but produced through indifference.Moreover, although the daily life stories expressed in Nüshu often spoke of the hardscrabble existence of these rural women, they included a wide range of texts including playful nursery rhymes, joyful memories and messages of support.A fragment from a Nüshu poem: “Besides a well, one does not thirst. Besides a sister, one does not despair.”Structurally, Nüshu differs markedly from written Chinese. Whereas hanzi are logographic, each character fused with its semantic import, Nüshu is phonetic. Its slender, rhomboid characters represent syllables rather than meanings. Written in vertical columns, read from top to bottom and right to left, it comprises roughly 600-700 characters. Many are adapted from hanzi, while others appear to draw on the visual vocabulary of embroidery and textile design.Transmission of Nüshu was informal and intimate, passed down from mothers and grandmothers to daughters, learned through imitation rather than formal instruction. In this sense, it is now considered a dead script. The last known fluent native practitioner, Yang Huanyi, died in 2004 at the age of 98. Two years later, Nüshu was recognised as part of China’s National Intangible Cultural Heritage, leading to the establishment of a museum on Puwei Island in Jiangyong County. Today, local women – and some men – are trained as interpreters and “inheritors” of the script. As a result, the language survives but in a commodified, tourist-souvenir form.Women in contemporary China, even in relatively remote regions, no longer face the same barriers to formal education that once gave rise to Nüshu. Its disappearance is partly the result of changing conditions; it has arguably outlived its original function. And yet, as an underdog, gender-bound form of expression, its very existence remains remarkable: a fragile system that persisted alongside – and in quiet defiance of – the unifying Goliath-like force of hanzi.It stands as a testament to the poet latent even in the supposedly “backward” or “uneducated” woman.Fragment of a Nüshu poem:“It should not have been that we came into this life wrong as girls –Red plums on the tree, a useless branch.”Journalist and writer Pallavi Aiyar brings the Indian perspective to understanding China. With ‘Writing on the Great Wall’, she places her eye on China’s economy, its culture, its government and its people. Aiyar has spent more than two decades studying China, having lived there from 2002 to 2009, and again from August 2025.