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{{Short description|Korean linguist (1465–1542)}}
{{Copy edit|date=July 2025}}
{{Infobox person
| name = Ch'oe Sejin
| image = 
| native_name = 최세진 (崔世珍)
| birth_date = 1465 
(Seoul, Korea)
| death_date = February 10, 1542 (aged 77)
Seoul, Korea
| occupation = Translator, interpreter, linguist
| known_for = Translation of Chinese texts; Comparative studies of Korean and Chinese; and naming and ordering of Hangul Characters 
| notable_works = ''{{ill|Hunmong chahoe|ko|훈몽자회}}''
| module        = {{Infobox Korean name/auto
| hangul  = %최세진
| hanja   = 崔世珍
| hangulja = %_공서
| hanjaja = 公瑞
| child = yes }}
}}
{{family name hatnote|[[Choi (Korean name)|Ch'oe]]||lang=Korean}}
'''Ch'oe Sejin''' ({{Korean|hangul=최세진|hanja=崔世珍}}; {{IPA|ko|t͡ɕʰwe sʰed͡ʑin}}; 1465 &ndash; February 10, 1542) was a Korean linguist, and a translator and interpreter of the Chinese language during the [[Joseon]] Dynasty. He is of the [[Goesan]] [[Choe clan]] and his [[courtesy name]] was Gongseo ({{Korean|hangul=공서|hanja=公瑞|labels=no}}).<ref name="EncyKorea">{{cite web|url=http://www.encyber.com/search_w/ctdetail.php?masterno=147691&contentno=147691|publisher=[[Encyclopedia of Korean Culture]]|language=ko|script-title=ko:최세진 崔世珍|trans-title=Ch'oe Se-jin|access-date=2009-09-18}}{{dead link|date=August 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> He is widely known for his research with the Korean [[hangul]] letters, and comparative studies with Chinese and Korean, which further led to the propagation of hangul during a time period when Chinese characters were used as the main system of writing. Ch'oe was recognized by many for his talents as an official interpreter in the Korean [[Embassies]] in Beijing and in his works in [[hangul]] research. However, he lived a tumultuous life due to this middle class status, which led him to be the target of many envious aristocrats of his era.<ref name=":2" /><ref name=":0">{{Cite journal|last=Jung|first=Kwang|year=1999|script-title=ko:최세진의 생애와 업적 |trans-title=Ch'oe Sejin's Life and Accomplishments|url=http://www.korean.go.kr/nkview/nklife/1999_3/1999_0301.pdf|journal=새국어생활|volume=9th Volume}}</ref>

Ch'oe devised the modern Korean order of the [[hangul]] characters, and assigned names to the letters.  His most famous book on hangul is the ''{{ill|Hunmong chahoe|ko|훈몽자회}}'' ("''Collection of Characters for Training the Unenlightened''", 1527).<ref name=":0" /> Over the course of 40 years, he composed 7 original works, and published 10 translations and research works.<ref name="EncyKorea" />

== Biography ==
Ch'oe Sejin was born into a middle-class family in Seoul. His father was Ch'oe Chungbal, who was also a translator and interpreter for the government.<ref name=":2">{{Cite web|url=http://terms.naver.com/entry.nhn?docId=690485&cid=41708&categoryId=41711|title=최세진 |trans-title=Ch'oe Sejin|last=국어국문학자료사전 (Korean Language and Literature Encyclopedia)|date=1998|website=한국사전연구사}}{{dead link|date=August 2017|bot=medic}}{{cbignore|bot=medic}}</ref> Ch'oe Sejin's birth year is not found in any records, but given the record found in "{{ill|Jungjong of Joseon Chronicles|ko|중종실록}}", his birth year is estimated as 1465. However, there are other claims that he was born in 1473.<ref name=":0" /> When he was 21, he passed the "Translating and Interpreting Government Exam" and when he was 38, he placed second in another exam, the "Bong Se Ja Byul Shi" Exam, an exam conducted to celebrate the crowning of the Prince.<ref name=":1">{{Cite news|url=http://news.joins.com/article/475435|script-title=ko:[이 달의 문화인물]16세기 동아시아 언어학의 대가 최세진 (This Month's Cultural Figure: Ch'oe Sejin, the Master of 16th century East Asian Linguistics)|last=Lee|first=Jae Kwang|date=October 10, 1999|work=[[Korea JoongAng Daily]]|access-date=March 17, 2017}}</ref>

Ch'oe was known as very skilled as a translator and interpreter. However, during a time period when society was strictly stratified, his middle class status restricted his career and even led him to many difficulties and hardships. The noble class organized society in a way that they controlled and possessed a majority of the wealth and property of the country, and it was common for the nobility to be jealous over highly talented middle class government officials who might successfully become promoted, and surpass nobles in rank, although this was very rare. Ch'oe Sejin was a target for the nobles' jealousy, and he was sacrificed in the factional strife and tumultuous political climate at the time. For example, two months after he passed the "Bong Se Ja Byul Shi" Exam, his acceptance became nullified because of an involvement in a trial for the murder of the deposed Queen, Yoon. Even though he was not directly involved, the Minister of Culture and Education, Lee Sejwa, who conducted the exam and personally recommended Ch'oe was involved in the trial, and as a result, all acceptances were nullified. Some were able to retain their acceptance due to familial ties, however, Ch'oe was not one of them. Even after 3 years of waiting, he was accused of writing the anonymous letter criticizing the National Court in 1507 and was subject to a severe sentence. He was saved from this accusation after more investigation, but this highlights the kind of difficulties he faced due to his social class.<ref name=":1" />

Two months after the accusations proved false, he encountered a golden opportunity that allowed him to receive his government rank back. An envoy from China was visiting the King of Joseon, but there was no one appropriate and qualified to serve as the interpreter during the visit. Ch'oe Sejin was chosen as the interpreter reluctantly, but he successfully completed the task and was recognized for his talents. The King recognized his works, and he was able to further his career.<ref name=":0" />

Upon his death, a scholar named {{ill|Kim An Gook|ko|김안국}} dedicated a poem to Ch'oe. The poem is called "Ch'oedongjisejinman" ({{Korean|최동지세진만|崔同知世珍挽|labels=no}}) and is widely known because of the information it holds about Ch'oe Sejin. Because there are few records left about Ch'oe, this poem provides one of the best sources of details about Ch'oe's life through the eyes of his friend, Kim.<ref name=":0" />

== ''Hunmong chahoe'' and his works with hangul ==
[[File:訓蒙字會.pdf|thumb|x381px|The cover of ''Hunmong chahoe''|page=2]]
Ch'oe Sejin is mostly known for his 1527 work, ''{{ill|Hunmong chahoe|ko|훈몽자회}}''.<ref name=":0" /> It is a textbook for children to learn the Chinese characters, and is known to be very practical in its teachings. During the Joseon Era, literacy in Chinese was an essential skill for advancement in society. Chinese was the dominant language of literature at this time, and children were taught Chinese from an early age to prepare for the future.<ref name=":1" /> Although hangul, the Korean orthography, existed by this time, it was not widely used in the country. Ch'oe wanted to promote the usage of hangul through his work ''Hunmong chahoe''. As a textbook for children to learn Chinese, ''Hunmong chahoe'' incorporated hangul in the textbook to promote both the learning of Chinese characters, as well as hangul.<ref name=":3" /> The Chinese characters were annotated in hangul, and in order for one to understand and learn the Chinese characters, one must have a full grasp of hangul first to comprehend the annotations. Ch'oe wanted people to use hangul more extensively, and he thought that this would encourage people to take some time to fully learn hangul, before starting to learn Chinese.<ref name=":2" /><ref name=":0" /><ref name=":1" /> He wrote that "it would take [only a single day] to learn Hangul", commenting on the simplicity of hangul, and afterwards, one would be able to learn Chinese on their own without an instructor if one knew hangul and utilized his textbook.<ref name=":1" /><ref name=":3" />

This book was known at the time for being revolutionary for its practicality and creativity. The two widely used works for learning Chinese characters during his time were called "[[Thousand Character Classic]]" and "Yoo Hap".<ref name=":1" /> The "Thousand Character Classic" was considered very tedious and contained words that were conceptual and not suitable for daily use, while the other text "Yoo Hap" was thought to be not suitable for daily instruction. ''Hunmong chahoe'' attempted to supplement these weaknesses, while combining their strengths in the breadth of content.<ref name=":1" /> The "Thousand Character Classic" contained 1,000 characters, while ''Hunmong chahoe'' contained 3,360 characters.<ref name=":3" /> It also ordered the Chinese characters with relation to its meanings: Chinese characters with similar meanings were grouped together to ease the process of learning.<ref name=":1" /><ref name=":3" />

As one of the phoneticians in the history of the [[Joseon]] Dynasty, he compiled the order of the Korean letters in ''Hunmong chahoe''. The first eight characters in the order that is presented in this work are characterized as sounds that are "used for both the initial and the final sounds".<ref name=":3" /> The next eight set of characters are described as "those used only for the initial sounds". These eight characters that occur initially are ordered as the following: "Molar [kh], the Tongue [th], the Lip [ph], the Tooth [c ch], the Half Tooth [z], and the Throat [0]". Only the order of these eight characters have been retained until the present and the order of the other characters as proposed by Ch'oe have been altered. The reason for the change of the order of the other characters are unidentifiable.<ref>{{Cite journal|last=Song|first=Ki-Joong|year=2011|title=Ancient Indian and Chinese Models of Sound Classification|url=http://scripta.kr/scripta2010/kr/scripta_archives/scripta_v03_a002.pdf|journal=Seoul National University|pages=37–39|access-date=2017-03-28|archive-url=https://web.archive.org/web/20170328195110/http://scripta.kr/scripta2010/kr/scripta_archives/scripta_v03_a002.pdf|archive-date=2017-03-28|url-status=dead}}</ref> Ch'oe also ordered the vowels in Hangul. He ordered them according to sequence in which we open our mouth to articulate these vowels. His ordering of the vowels is the order that is currently used in present-day Korea.<ref name=":3">{{Cite web|url=http://urimal365.kr/index.jsp?control=page&part=view&idx=9528|script-title=ko:한글을 다시 일으킨 최세진 |trans-title=Ch'oe Sejin, the one who revived hangul|publisher=[[National Institute of Korean Language]]|website=쉼표, 마침표.|access-date=March 22, 2017}}</ref>

''Hunmong chahoe'' has been republished 10 times over the time period of 400 years.<ref name=":1" /> It was the most reproduced Chinese textbook of the Joseon Era, and it was also widely used in Japan.<ref name=":3" />

== Career and legacy ==
Despite Ch'oe's social class and the difficulties he faced during his lifetime, the records we have of him indicate his significance and influence on Korean [[hangul]], the education of [[Chinese characters]], and the field of [[linguistics]].<ref name=":0" /> Scholars that belong to the middle class rarely get recognized for their works, and no historical records are ever kept of middle-class citizens. The available records of Ch'oe are very scarce, however, the sole presence of even a minuscule historical record indicates that he was an influential figure in the history of the Korean language.<ref name="EncyKorea" />

When his reputation was restored after he served as a translator to the king during a visit by the Chinese envoy, Ch'oe successfully built his career as a translator, interpreter and linguist. His linguistic talent is even recorded in the {{ill|Jungjong of Joseon Chronicles|ko|중종실록}}, which is a chronological record of King Jungjong's historical reigns from 1506 to 1544.<ref name=":0" /> Yoo Soon, a prime minister of the Joseon Dynasty, wrote that Ch'oe was "the best in the nation when it comes to Chinese writing and pronunciation" and that he was worried that there was no one to succeed him to translate and respond to documents sent from China. Thus, Yoo Soon wrote a petition to the King, asking him to pick approximately six talented individuals to be instructed by Ch'oe Sejin, in order to make sure that Ch'oe's legacy was maintained. The King also wrote about his worries that Ch'oe might be the only person capable of handling proper relations with China.<ref name=":0" /><ref name=":1" />

In addition to his skills as a translator and interpreter, his works also contain his legacy. He published a lot in the field of linguistics, especially in the realm of Chinese linguistics directed towards a Korean audience. He translated numerous works such as "[[Bak Tongsa]]", ''Interpreter Park'', which was a Chinese textbook, and elaborated on its research through his own work "Sasung Tonghae", ''Explaining the Four Sounds''.<ref name=":1" />

== Commentary on Ch'oe Sejin and his works ==
There are very scarce resources available to shed light onto Ch'oe Sejin's life. One work that reveals a lot about Ch'oe's character and his influence during his time is a poem written as a eulogy by one of his friends, Kim Ankook. The poem was written in 1542 after Ch'oe's death, and is titled "''Ch'oedongjisejinman"'' ({{Korean|hangul=최동지세진만|hanja=崔同知世珍挽|labels=no}}).<ref name=":1" />
{| class="wikitable"
!Original (Chinese characters)
!Korean translation
!English translation
|-
|逆旅浮生七十翁

親知凋落奇孤躬

登名四紀機更變

餘榜三人又失功

爲命自今誰共討

輯書裨後世推功

嗟吾後死終無益

淚泗東風慟不窮
|잠깐 다녀가는 뜬구름 같은 인생 70 노인이
친한 이 모두 사라진 채 혼자 남아 있구나

과거급제해 이름을 올린 지도 40년, 그동안 변을 당한 이 몇이던가

셋 남은 동기 중 또 그대를 잃었으니

이제 사대외교 문서를 지을 때 누구와 토론하리오

책을 지은 그대는 후세에 도움 줄 공을 남겼구려

슬프구나, 나는 죽은 뒤 아무런 이익을 남기지 않았다

눈물을 동풍에 뿌리며 소리내어 울기를 그칠 수 없구나
|A man, who lived 70 years of a fleeting life, 
lies here alone, having seen the death of many of his loved ones.

How many times has he gone through unlucky hardships during the 40 years after passing the examinations?

I lost another friend out of the three that are left,

so, who will I now discuss and debate with when composing diplomatic documents?

You have done a great service to the future, leaving a great number of works.

I am filled with sorrow; I will not leave any works after I die.

I cannot stop my tears from flying out with the east wind, and stop from sobbing in anguish. 
|}
This is a poem that reflects Kim Ankook's sorrow upon his friend Ch'oe's death. This is a poem that is one of the most known among Korean linguistics, because there is a lot of information about Ch'oe packed into a single poem.<ref name=":1" /> According to Kim, it can be known that Ch'oe went through a lot of hardships during the 40 years he served as a government official, and eventually lived a long life, "having seen the death of many of his loved ones". Another line of the poem, "who will I discuss and debate with when composing diplomat documents?", indicates that he was an important figure in international diplomacy, especially with respect to translation and interpretation. Lastly, Kim notes that his accomplishments will last far into the future, since his works are considered as "a great service to the future". This highlights Ch'oe's influence in the field of Korean linguistics.<ref name=":1" />

== Other notable works ==
In addition to ''Hunmong chahoe'', Ch'oe also composed 17 research publications over the course of 40 years in total.<ref name=":0" /> A few of his most notable works are:

* ''Sasŏng t'onghae'' ({{Korean|hangul=사성통해|labels=no}}; 1517) marks the intonations, and the correct pronunciations of Chinese characters in hangul. It also includes records of 450 Korean words in hangul, and is an important source for the research on the history of the Korean language.<ref>{{Cite web|url=http://krdic.naver.com/detail.nhn?docid=19285400|title='사성통해' ("Sasung Tonghae") : 네이버 국어사전 (Naver Korean Dictionary)|website=krdic.naver.com|language=ko|access-date=2017-04-05}}</ref>
* ''Sohak p'yŏnmong'' ({{Korean|hangul=소학편몽|labels=no}}; 1537) is a textbook for Chinese language learners, dedicated to the King.<ref>{{Cite web|url=http://krdic.naver.com/detail.nhn?docid=22039300|title='소학편몽' ("Sohak Pyunmong") : 네이버 국어사전 (Naver Korean Dictionary)|website=krdic.naver.com|language=ko|access-date=2017-03-17}}</ref>
* ''Unhoe okp'yŏn'' ({{Korean|hangul=운회옥편|labels=no}}; 1537) is a supplementary material published to add on to the works in ''Sasung Tonghae''.<ref>{{Cite web|url=http://krdic.naver.com/detail.nhn?docid=28956300|title='운회옥편' ("Unhoe Okpyun"): 네이버 국어사전 (Naver Korean Dictionary)|website=krdic.naver.com|language=ko|access-date=2017-04-05}}</ref>
* ''Yŏhyogyŏng'' ({{Korean|hangul=여효경|labels=no}}; 1541) was one of his last works, written when he was 76.<ref name=":1" />
* ''Kyŏngsŏngji'' ({{Korean|hangul=경성지|labels=no}}; 1541), a work about the [[Nanjing]] city in China, was one of his last works before he died at the age of 77.<ref name=":0" />

== See also ==
* [[History of Korea]]
* [[Joseon Dynasty]]

== References ==
{{reflist|30em}}

{{authority control}}

{{DEFAULTSORT:Ch'oe, Sejin}}
[[Category:1465 births]]
[[Category:1542 deaths]]
[[Category:16th-century Korean writers]]
[[Category:Linguists from Korea]]
[[Category:People from Seoul]]
[[Category:Linguists of Korean]]
[[Category:Linguists of Chinese]]
[[Category:Korean translators]]