How Three-Body Was Translated: Ken Liu, Joel Martinsen, and the Art of Sci-Fi Translation

When The Three-Body Problem won the Hugo Award for Best Novel in 2015, it made history as the first work originally written in Chinese to claim science fiction's most prestigious honor. That triumph belonged to Liu Cixin — but it also belonged to Ken Liu, the translator who carried the novel across the language barrier and delivered it to English readers with its strangeness, its scope, and its emotional weight intact.

Translation is often described as invisible work. When it's done well, readers forget it exists. The Three-Body trilogy is a case study in what "done well" actually requires.

Two Translators, One Trilogy

The Remembrance of Earth's Past trilogy reached English readers through two different voices. Ken Liu translated The Three-Body Problem (2014) and Death's End (2016), while Joel Martinsen handled the middle volume, The Dark Forest (2015). This split was primarily practical — the publication schedule was aggressive, and no single translator could have turned around all three books at the pace Tor Books needed. But it created an interesting dynamic: the trilogy's first and final volumes share a translator, while its middle book belongs to someone else.

Both translators are working writers as well as translators. Ken Liu is a celebrated science fiction author in his own right, known for The Paper Menagerie and the Dandelion Dynasty series. Joel Martinsen is a Beijing-based journalist and translator who has worked extensively on Chinese literary fiction. The difference in their backgrounds is audible — not in quality, but in approach. Liu tends toward a slightly more lyrical register; Martinsen brings a more journalistic precision. Neither choice is wrong, and readers moving through the trilogy sequentially may barely notice the transition.

The Problem of Untranslatable Context

Liu Cixin's prose is not especially ornate by Chinese literary standards, but it is deeply embedded in a cultural context that English readers cannot be assumed to share. The opening chapters of The Three-Body Problem take place during the Cultural Revolution — a period of intense political violence that most Chinese readers understand viscerally, and that most Western readers have encountered only abstractly, if at all.

Ken Liu's solution was to translate not just the words but some of the context. His version includes translator's footnotes that explain references which would be immediately legible to a Chinese reader but opaque to an American one. This was a deliberate editorial choice, and a somewhat unusual one — footnotes in fiction carry the risk of interrupting narrative momentum. Liu defended the decision in several interviews, arguing that the alternative — either omitting the context or flattening it into prose explanation — would have done more damage. A reader who doesn't understand what the Red Guards were cannot understand why Ye Wenjie does what she does. And if readers don't understand Ye Wenjie's motivation, the entire trilogy loses its moral foundation.

This is the core tension of literary translation: how much do you serve the text, and how much do you serve the reader? There is no formula.

Scientific Vocabulary Across Languages

Science fiction translation carries a particular challenge that literary fiction doesn't: the technical vocabulary must be both accurate and readable. The Three-Body Problem is dense with physics — quantum mechanics, orbital dynamics, particle accelerator theory — and Liu Cixin takes the science seriously. A translator who reaches for approximate terms risks either confusing readers who know the field or misleading readers who don't.

Ken Liu has discussed the challenge of rendering Liu Cixin's scientific exposition in English prose that sounds natural rather than translated. Chinese scientific writing has its own conventions for explaining complex concepts, and those conventions don't always map cleanly onto English technical writing. The sophon chapters — in which Trisolaran engineers unfold a proton through eleven dimensions and etch integrated circuits onto its surface — required Liu to find language that conveyed both the technical plausibility Liu Cixin intended and the sublime strangeness of the concept. Too clinical and the scene loses its wonder. Too poetic and it loses its credibility.

The term "sophon" itself is a translational invention. The Chinese is 智子 (zhìzǐ), which literally means something like "wisdom-child" or "intelligent particle." Ken Liu coined "sophon" as an English portmanteau — sophia (wisdom) + proton — that captures the scientific register of the original while working as a standalone English coinage. It has since become so embedded in English-language discussions of the trilogy that most readers assume it is Liu Cixin's term.

What Gets Lost, What Gets Transformed

No translation is without loss. The version of The Three-Body Problem that English readers encounter is not identical to what Chinese readers experience — it cannot be. Some losses are small: wordplay that depends on Chinese characters doesn't survive the crossing. Some are larger: the novel's opening, set in a specific Chinese historical moment with specific ideological vocabulary, lands differently on a reader for whom that history is distant rather than lived.

But translation also transforms. Ken Liu has argued that translation is a form of rewriting — that the translator makes choices the author never made, because the author never needed to. Every sentence in the English Three-Body Problem required Liu to answer a question Liu Cixin never had to ask: How does this feel in English? The answers he found are not always the only possible answers, but they are consistently thoughtful ones.

Joel Martinsen faced a different set of challenges with The Dark Forest. The second novel is more politically complex than the first — it deals with global governance, military strategy, and the psychology of power in ways that required Martinsen to navigate politically freighted vocabulary that carries different connotations in English than in Chinese. The Wallfacer program, the Planetary Defense Council, the ideological debates of the Crisis Era — all of these required translation choices that were simultaneously linguistic and interpretive.

The Translators as Advocates

Both Ken Liu and Joel Martinsen have served as active advocates for Chinese science fiction in the English-language market, not just as translators but as critics, commentators, and talent scouts. Ken Liu in particular has edited and translated several anthologies of Chinese science fiction, including the Invisible Planets collection, which introduced English readers to authors like Hao Jingfang, Chen Qiufan, and Xia Jia. The success of the Three-Body trilogy created an opening, and both translators worked to ensure that other Chinese voices could move through it.

This advocacy dimension of translation is easy to overlook when discussing craft. But translation is not just a technical act — it is also a cultural argument. Every translation is, implicitly, a claim that this work matters enough to carry across the barrier. Ken Liu and Joel Martinsen made that claim loudly, and the Hugo Award suggested the English-language readership agreed.

Reading Across the Gap

There is something fitting about the fact that a novel whose central drama involves the catastrophic consequences of communication across an unbridgeable gap — civilizations that cannot understand each other's nature, that default to silence and violence rather than risk contact — should itself require an act of translation to reach its largest audience.

The Three-Body trilogy is, among other things, a meditation on what gets lost when different minds attempt to share meaning. The translators who carried it into English were doing, at a smaller scale, exactly what the novel's characters struggle to do across stellar distances: find the words that bridge the gap, accept the losses, and hope that what survives the crossing is enough.

That it was — that the English trilogy became a global phenomenon, that readers in dozens of languages found themselves shaken by Ye Wenjie's choices and Luo Ji's loneliness and Cheng Xin's impossible burden — is a testament to everyone who worked on the translation. Invisible work, done well, at civilizational scale.