The Golden Statue Behind the BTS Stage : and the Alphabet[Hangul] He Invented

King Sejong Created Hangul in 1443. Here's Why Linguists Still Talk About It.

If you watched the BTS comeback concert at Gwanghwamun on March 21, you saw it in the background. Tall, gilded, presiding over the square from its elevated platform. Most international viewers who caught the Netflix livestream probably registered it as a landmark without knowing much more than that — a large historical statue, fitting backdrop for a historic concert. The New York Times noted it in passing: BTS had performed beneath "a 6-meter golden statue of King Sejong," the paper wrote, next to the ancient palace gates. That description is accurate as far as it goes. But the statue standing in Gwanghwamun Square is one of the more remarkable things in Seoul, and the man it depicts is arguably the reason the Korean language looks the way it does today.

Sejong was the fourth king of the Joseon dynasty, ruling from 1418 to 1450. He is remembered in Korean history for many things — advancements in agriculture, astronomy, music, and governance. But his most enduring achievement was the creation of Hangul, the Korean writing system, which he introduced in 1443 and officially promulgated in 1446. The document announcing it was called Hunminjeongeum: "Correct Sounds for the Instruction of the People." That phrase is a fairly direct statement of the motivation. Before Hangul, educated Koreans wrote in classical Chinese characters — a system that bore no structural relationship to the Korean language and required years of study to master. The vast majority of the population was effectively locked out of literacy. Sejong set out to change that.

The golden statue of King Sejong in Gwanghwamun Square, Seoul, seen from below at dusk

The statue of King Sejong has stood in Gwanghwamun Square since 2009 — directly behind the stage where BTS performed on March 21, 2026.

What Sejong Actually Built

What makes Hangul distinctive — and what has drawn admiration from linguists ever since — is that it was consciously designed rather than evolved. Most writing systems in the world developed gradually, accumulating irregularities and exceptions over centuries of use. Hangul was engineered from a specific principle: that the characters should reflect the physical shapes the mouth, tongue, and throat make when producing each sound.

The consonant letters were modeled on the position of the vocal organs during articulation. The letter that represents the sound "g" or "k," for instance, is shaped to suggest the back of the tongue pressing against the throat. The letter for "n" resembles the tongue touching the roof of the mouth. This is not phonetic symbolism in a loose sense — it was a deliberate design choice that embedded the pronunciation logic into the visual form of the characters themselves. Some linguists have described this as one of the most scientifically grounded inventions in the history of writing.

The vowels operate on a different principle, drawn from a cosmological framework: a horizontal line representing the earth, a vertical line representing a standing person, and a dot or short stroke representing the sky or sun. These combine to produce the ten basic vowels. The full system uses 14 basic consonants and 10 basic vowels — 24 letters in total — which combine into syllable blocks rather than being written linearly like a Latin alphabet. The word "bibimbap," for example, is eight Latin characters in a row but three blocks in Korean: bi-bim-bap. Each block carries one syllable, organizing the letters visually in a way that also reflects how Korean is spoken.

The result is a writing system that can be learned in a matter of days for basic reading ability, while remaining expressive enough to handle the full complexity of a modern language. Scholars have noted that in practice, most adult learners can read Korean phonetically within a few hours of focused study — not fluency, but the ability to decode the symbols. That speed of acquisition reflects the internal consistency that Sejong built into the system from the outset.

Hangul and the Digital Age

The qualities that made Hangul effective for literacy in the 15th century turn out to be properties that also make it well-suited to digital and computational environments — though for reasons Sejong could not have anticipated.

Compared to Chinese or Japanese, which require input methods capable of handling thousands of characters, Hangul's 24-letter system can be mapped directly onto a standard keyboard with relatively little complexity. Korean is typed as a combination of consonant and vowel keystrokes, with the operating system assembling them into syllable blocks in real time. This makes Korean keyboard input fast and efficient, and it means that encoding Korean digitally does not require the character lookup systems that add overhead to Chinese and Japanese computing environments.

The consistency of Hangul's sound-to-symbol relationship also has implications for voice recognition and speech technology. Because the writing system encodes pronunciation with high regularity, the mapping between spoken Korean and written Korean is more predictable than in languages with complex or historically accumulated spelling systems. English, by contrast, maintains spellings that often diverge substantially from contemporary pronunciation. Korean orthography has its own complexities, particularly around morphological changes that occur when syllables combine, but the underlying phonological logic is transparent in a way that supports computational processing.

At the same time, the language itself — as distinct from the script — presents genuine challenges for AI systems. Korean is agglutinative: grammatical meaning is built by attaching chains of suffixes to root words, which can generate a large number of distinct word forms from a single root. Korean also has a complex system of speech levels, where different verb endings and vocabulary are used depending on the social relationship between speaker and listener. These dimensions of the language require AI models to learn not just vocabulary and syntax but the social context in which particular forms are appropriate. The script's elegance and the language's complexity are separate matters, and both are worth understanding on their own terms.

Close-up of Hangul characters printed in ink on cream paper, showing the geometric structure of the Korean alphabet

Hangul's 24 letters combine into syllable blocks — a structure that encodes both sound and visual rhythm simultaneously.

The Question of Hangul Beyond Korea

Hangul is the official writing system of both South and North Korea, and it is used by the Korean diaspora communities worldwide. Beyond Korea itself, the most discussed case of Hangul adoption is the Cia-Cia language, spoken by a community in Baubau, on Buton Island in Indonesia. In 2008 and 2009, Hangul was introduced as a writing system for Cia-Cia — a language that had no established orthography — through a collaboration between South Korean linguists and local educators. The program has continued at a small scale: as of 2025, Hangul is taught in two subdistricts to schoolchildren in Baubau, though the program remains limited in scope and has not expanded to official adoption at the national level.

The Cia-Cia case is sometimes cited as evidence of Hangul's adaptability to other languages. The underlying point is that because Hangul represents sounds phonetically with a relatively broad range of consonant and vowel combinations, it can in principle be adapted to write languages other than Korean — provided the phoneme inventory of that language can be covered. South Korean linguists and the Hunminjeongeum Society have pursued similar efforts for other unwritten languages over the years, with varying results. The goal of these efforts has generally been to preserve languages that lack written documentation, not to replace existing scripts.

Korean is also recognized as a minority language in parts of China — specifically in Yanbian Prefecture in Jilin province — and is spoken by diaspora communities in Central Asia, Russia's Sakhalin Island, Japan, the United States, and elsewhere. The global Korean-speaking population is estimated at around 81 million. That number, combined with the cultural reach of K-pop, Korean cinema, and Korean food, has contributed to a surge in Korean language learning interest that the South Korean government has moved to support institutionally.

Where to Start with Korean

The primary government-supported institution for Korean language learning outside Korea is the King Sejong Institute — named, deliberately, after the inventor of Hangul. The program launched in 2007 with 13 locations and 740 students. As of 2025, there are 252 King Sejong Institutes operating in 87 countries, with over 210,000 enrolled learners. The competition to open new institutes has intensified: in Egypt, where the single existing institute in Cairo had a waitlist of more than 1,200 students, two new locations opened at Ain Shams University and Alexandria University in 2025. The South Korean government has set a target of expanding to over 350 institutes by 2030.

For learners outside the reach of a physical King Sejong Institute, the Online King Sejong Institute (accessible through the King Sejong Institute Foundation's website) provides structured Korean language courses from beginner through advanced levels, including real-time instruction by certified teachers and one-on-one assignment feedback. In 2024, the online platform served over 94,000 students. The program runs on a semester basis and is available to learners anywhere.

TOPIK — the Test of Proficiency in Korean — is the internationally recognized standardized exam for Korean language, administered by the National Institute for International Education. It is divided into two levels: TOPIK I covers beginner to intermediate, and TOPIK II covers intermediate to advanced. The exam is offered at test centers in over 80 countries and is widely used by universities, employers, and immigration authorities for formal Korean language certification.

Beyond these institutional options, the landscape for self-directed Korean learning has expanded substantially over the past decade. Language applications including Duolingo and Pimsleur offer Korean courses. Platforms such as Coursera and edX host university-level Korean language curricula. The National Institute of Korean Language operates an online Korean language portal at Korean.go.kr that includes grammar guidance, vocabulary tools, and pronunciation reference — designed primarily for learners who want to engage with the formal standard of the language.

A person writing Korean in a notebook at a minimal white desk, seen from the side

Korean language learning has expanded significantly in recent years — the King Sejong Institute network now reaches 87 countries, with over 210,000 enrolled learners as of 2025.

The Statue, the Square, and What Comes Next

The BTS concert at Gwanghwamun was notable for many reasons, but one of its quieter dimensions was the layering of references it contained. The album was named after a folk song. The stage was built to frame rather than obscure the ancient palace gate. The group performed in costumes drawing on historical court aesthetics. And standing throughout all of it, as it has stood since 2009, was the gilded statue of the king who gave Korea its writing system — the tool through which everything from Joseon-era literature to contemporary K-pop lyrics has been expressed.

The name Sejong appears throughout contemporary Korean institutional life: the King Sejong Institutes spreading Korean language worldwide, the city of Sejong built as South Korea's administrative capital, the Sejong Center for the Performing Arts in Seoul. That ubiquity reflects a genuine cultural investment in what the 15th-century king built. Hangul is not simply a practical writing tool; it is understood in Korea as an act of political will on behalf of ordinary people — a decision that literacy should not be the exclusive property of those privileged enough to master classical Chinese.

That framing resonates in a different way when the same square that holds Sejong's statue becomes the site of a free concert streamed to 190 countries — a moment when Korean culture travels, again, not to specialists but to anyone willing to watch. There is something connecting these moments across 580 years, even if the connection is easier to feel than to fully articulate. FRANVIA will be publishing a short series on the Korean language — its structure, its sounds, and what the experience of learning it is actually like — in the coming weeks. If there's a specific dimension of Hangul or the Korean language you've been curious about, that's a reasonable place to start the conversation.

Thank you for reading FRANVIA.

I hope each post helps you feel closer to the real Korea.

You can continue with more FRANVIA stories below.