---
title: "Jeong Yak-yong's Gangjin Exile and Writing Mongminsimseo"
locale: en
category: case_study
category_name: "Case Study"
translation_status: reviewed
license: cc_by
author: "Injoys Editorial Team"
source_url: https://injoys.com/en/articles/jeong-yak-yong-gangjin-exile-mokminsimseo
published_at: 2026-11-04T22:28:33+09:00
---

# Jeong Yak-yong's Gangjin Exile and Writing Mongminsimseo

> During his exile, Jeong Yak-yong drew on his experience in office and written sources to complete a draft of Mongminsimseo in the spring of 1818. He left behind a reference work on local governance, but after his release from exile, he was unable to return to office and put his ideas into practice.

## Key Points

- Jeong Yak-yong was implicated in the Sinyu Persecution of 1801 and was exiled first to Janggi and then to Gangjin.
- Mongminsimseo is a guide to local administration that combines his experience in office, written sources, and the realities he encountered in exile.
- After completing the draft in the spring of 1818, he was released from exile in September of the same year and continued revising it after returning home.
- Mongminsimseo consists of 12 parts and 72 articles, covering a local magistrate's tenure from taking office to stepping down.
- The book's transmission is documented, but this alone cannot establish how widely its reform proposals were actually implemented.

The exile that began in 1801 made it difficult for Jeong Yak-yong to take part in administration. Drawing on his experience in office and written sources, he completed the first draft of *Mongmin Simseo* in **the spring of 1818**. He is remembered for leaving his ideas for changing society in the form of a guide to local administration.

This article was written after consulting sources including Our History Net’s commentary on “Preface to Mongmin Simseo” in November 2026.

## Jeong Yak-yong’s Life and Writing Timeline

Jeong Yak-yong was a late Joseon scholar who was born in 1762 and died in 1836. He is widely known by his pen name, Dasan. As an official during King Jeongjo’s reign, he encountered the problems of local administration firsthand.

After passing the literary civil service examination in 1789, he held posts in central and local government. He took part in designing Hwaseong Fortress in Suwon and devised the geojunggi crane. His experience as a secret royal inspector and magistrate of Goksan provided a foundation for his later writings on administration.

| Period | Events and Writing Activities | Verification Source |
| --- | --- | --- |
| 1762 | Born in what is now Namyangju | Encyclopedia of Korean Culture, “Jeong Yak-yong” |
| 1789 | Began his official career after passing the literary civil service examination | Our History Net, “Jeong Yak-yong” |
| 1794 | Served as a secret royal inspector in the Gyeonggi region | Our History Net, “Jeong Yak-yong” |
| 1797 | Took office as magistrate of Goksan | Our History Net, “Jeong Yak-yong” |
| 1801 | Exiled to Gangjin after first being sent to Janggi | Our History Net, “Jeong Yak-yong” |
| 1808 | Moved to Dasan Chodang | Gangjin Cultural Center, “Historic Site / Jeong Yak-yong Historic Site” |
| Spring 1818 | Completed the first draft of *Mongmin Simseo* | Our History Net, “Mongmin Simseo,” introduction to *Chronological Biography of Master Saam* |
| September 1818 | Released from exile | Our History Net, “Mongmin Simseo” |
| After returning home | Revised *Mongmin Simseo* in his hometown | Our History Net, “Mongmin Simseo” |
| 1822 | Wrote “Self-Written Epitaph,” reviewing his life and writings | Our History Net, “Jeong Yak-yong” |
| 1836 | Died in his hometown | Encyclopedia of Korean Culture, “Jeong Yak-yong” |

The months follow the dates presented in Our History Net’s commentary. Lunar dates in historical sources have not been converted to the Gregorian calendar. Completion of the first draft and release from exile were separate events that occurred in the same year.

## The Background to His Exile and Life in Gangjin

The immediate cause of his exile was his implication in the Sinyu Persecution of 1801. He was first sent to Janggi in Gyeongsang-do. After being investigated again over the Hwang Sa-yeong Silk Letter Incident, he was exiled to Gangjin.

This incident occurred amid the persecution of Catholics and the political conflicts of the time. His political protection had also weakened after King Jeongjo’s death. Exile was not simply a change of residence but a punishment that restricted public activity.

He did not spend his entire time in Gangjin at Dasan Chodang. In the early years, he stayed in several places, including a tavern in Gangjin-eup. After moving to Dasan Chodang in 1808, he continued writing while teaching students.

Dasan Chodang is a place that reflects his research and teaching during the later years of exile. The surrounding area is now known as the Jeong Yak-yong Historic Site in Gangjin. His period of residence at the site must be distinguished from his entire period of exile in Gangjin.

## The Background to Writing Mongmin Simseo and Organizing Its Sources

The starting point for the book was his concern that local officials’ administration was harming people’s lives. A suryeong was a local official who governed a district. In the preface, Jeong Yak-yong criticized the reality of local magistrates pursuing private gain.

Organizing his experience into guidelines for specific duties was a turning point in creating the book. “Preface to Mongmin Simseo” explains that he selected examples of past officials from written sources. He also added his own views on abuses in tax administration that he heard about in exile.

| Sources Used in Writing | Contents | Role in the Book |
| --- | --- | --- |
| Experience in office and everyday life | What he observed where his father served, and his own experience as a royal inspector and local magistrate | Presented problems arising in administrative practice |
| Historical works, legal codes, and collected writings | Examples of past officials, legal systems, and earlier discussions | Provided grounds for judgment and reference cases |
| Conditions encountered in exile | Manipulation by local clerks handling administrative work and problems with taxation | Supplemented criticism of abuses at the time and proposed alternatives |

This structure makes it difficult to classify *Mongmin Simseo* as a collection of personal reflections from exile. It is a work on administration that gathers examples and classifies them by topic. It transformed personal experience into a form that other local officials could consult.

### The Meaning of Mongmin and Simseo

Mongmin means governing and caring for the people. The name Simseo reflects his circumstances, which made it difficult to put his ideas into practice himself. The preface explains the title as follows.

> Why call it Simseo? Because I have the wish to care for the people but cannot put it into practice myself. That is why I gave it this name.

This explanation appears in “Preface to Mongmin Simseo,” collection 1, volume 12 of Jeong Yak-yong’s *Yeoyudang Jeonseo*.

## The Contents of Mongmin Simseo: 12 Parts and 72 Articles

*Mongmin Simseo* divides the duties of local magistrates into **12 parts and 72 articles**. Each part contains 6 articles. It begins with preparations for taking office and continues through the process of leaving office.

| Part | Main Contents | Issues Addressed in Local Administration |
| --- | --- | --- |
| Buim | The process of taking office after appointment | Procedures for starting work in a new district |
| Yulgi | Managing the magistrate’s own conduct and daily life | Integrity, frugality, and control of private interests |
| Bonggong | Principles for carrying out public duties | Obligations to the state, including compliance with laws and reporting |
| Aemin | Caring for people who need protection | The lives of older people, young children, the sick, and others |
| Ijeon, Hojeon, Yejeon, Byeongjeon, Hyeongjeon, Gongjeon | Administration by field | Personnel, taxation, education, military affairs, trials, and facilities management |
| Jinhwang | Relief in response to famine | Securing and managing relief resources |
| Haegwan | The process of leaving office | Conduct during replacement and departure |

Yulgi addresses how magistrates should control their private desires. Aemin asks what administration should do for people who need protection. Jinhwang organizes the response to famine as a separate duty.

Lessons on integrity alone therefore cannot explain the entire book. Specific fields of administration, such as taxation and trials, also occupy a substantial portion. Its use of the six-code structure of *Gyeongguk Daejeon* also reflects this character.

## Comparison with Gyeongse Yupyo and Heumheum Sinseo

*Mongmin Simseo* should be read as a work centered on the duties of local officials. Its scope differs from that of *Gyeongse Yupyo*, which addresses state institutions. It is also distinct from *Heumheum Sinseo*, which deals with judgments in criminal cases.

| Work | Central Subject | Focus for Understanding |
| --- | --- | --- |
| Gyeongse Yupyo | State institutions and structures of governance | How should the country’s institutions be reformed? |
| Mongmin Simseo | The duties of magistrates governing local districts | How should local administration be improved? |
| Heumheum Sinseo | The examination and judgment of criminal cases | What grounds support careful judgments in cases? |

The three works are collectively called Ilpyo Iseo. Namyangju City’s account of his life states that *Heumheum Sinseo* was completed the year after his release from exile. Grouping all his major works together as having been completed in exile obscures the writing process.

## Revisions and Transmission After Completion of the First Draft

What was completed in the spring of 1818 was the first draft of *Mongmin Simseo*. Revisions continued in his hometown after his release from exile in September of the same year. Our History Net’s “Mongmin Simseo” explains these stages separately.

Release from exile means that his sentence of exile had ended. Jeong Yak-yong was unable to return to office after returning home. “Self-Written Epitaph” records that efforts to appoint him again were blocked.

The achievement of the work lies in leaving knowledge that could serve as a reference for local governance. The book was transmitted in manuscript copies. Our History Net explains that Gwangmunsa published a printed edition in 1902.

## The Difference Between the Book’s Circulation and Policy Implementation

The fact that the book was read is different from the fact that its proposals were implemented. Manuscripts and publication records show how the work was transmitted. Whether a particular policy was implemented must be verified through separate administrative records.

| Category | What Can Be Verified | What Cannot Be Established from That Fact Alone |
| --- | --- | --- |
| First draft and revisions | The process through which the work was created and refined | Whether all its proposals were tested in practice |
| Copying and publication | The fact that the book was copied and transmitted | Which articles were applied in which districts |
| Purpose of writing stated in the preface | The goals the author sought to achieve | How much people’s lives actually improved |

These distinctions are drawn from reading the writing timeline together with the records of transmission. Completion of the work should not be described as the resolution of social problems. Establishing the scope and effects of its application requires further comparison with records from the relevant regions.

## Records and Interpretation

The author’s explanations of himself in the records must be distinguished from later historical assessments. The preface reveals the purpose of writing and the methods of collecting sources. “Self-Written Epitaph” is a record the author wrote while reflecting on his own life.

### What the Author’s Own Records Establish

“Preface to Mongmin Simseo” shows how he examined both written sources and local conditions. The 1822 “Self-Written Epitaph” explains the nature of his writings and his own activities. Both records provide evidence for understanding his intentions in writing.

However, an autobiographical record is a text in which the author explains his own actions. It differs in nature from evidence that directly establishes other people’s assessments or the effects of policies. Reading it with its purpose in mind helps distinguish claims from outcomes.

### Assessments in Historical Commentary

Our History Net assesses Jeong Yak-yong as a figure who brought together and systematized Silhak. Here, Silhak refers to a scholarly trend that emphasized solving practical problems. The assessment rests on his connection of classical studies with ideas about how society should be governed.

The solutions in *Mongmin Simseo* also have the limitation of depending on individual magistrates. Our History Net’s commentary points out its emphasis on morality and a sense of responsibility. It cannot be regarded as a work that resolved all institutional and structural problems.

### Points Requiring Further Verification

The regions where the reform proposals were actually applied, and their effects, require separate verification. The date when the first draft was completed also cannot establish when each article was written. Such questions require examining editions alongside administrative records.

## The Significance of Reading It Today

This case shows how practical experience was organized into administrative knowledge. Experience gained in office was examined alongside examples from written sources. Problems encountered in exile also provided evidence that supplemented existing knowledge.

It cannot be treated as identical to public administration today. The book was written on the assumptions of Joseon’s legal system and magistrate-centered governance. Applying it to present-day institutions requires first distinguishing those assumptions.

The following questions can be used in learning.

- How were direct experience and written sources used together to identify problems?
- How were the responsibilities demanded of magistrates translated into specific administrative duties?
- What were the goals of reform, and what evidence shows actual implementation?
- What institutional problems are difficult to solve through personal integrity?

## Frequently Asked Questions

### When Was His Period of Exile?

The exile in Janggi and Gangjin discussed in this article lasted from 1801 to 1818. Historical accounts commonly call it an 18-year exile. Within that period, he lived at Dasan Chodang from 1808 to 1818.

### When Was Mongmin Simseo Completed?

The first draft was completed in the spring of 1818. Revisions continued after he was released from exile in September of that year. Completion of the first draft and the process of final revision should therefore be explained separately.

### Is Mongmin Simseo a Book About Integrity?

Integrity is a central topic of the Yulgi part. The book as a whole covers local administrative duties, including taxation, trials, military affairs, and relief. It can be understood as a guide addressing both the ethics and practical work of local magistrates.

### Did He Return to Work as a Local Official After His Release from Exile?

He was unable to return to work as a local official after his release from exile. In his hometown, he revised his writings and continued his scholarly activities. Release from exile and return to office are separate events.

### What Are the Limitations of Mongmin Simseo?

It places much of the responsibility for solutions on the morality and sense of responsibility of local magistrates. It presents specific proposals for improving local administration. However, completion of the book does not mean that institutional problems were resolved.

## FAQ

### Who was Jeong Yak-yong?
Jeong Yak-yong was a scholar and official of the late Joseon period who was born in 1762 and died in 1836. He is known by his pen name, Dasan. In works such as Mokminsimseo, he proposed ways to address practical problems in administration.

### Why was Jeong Yak-yong exiled to Gangjin?
He was implicated in the Sinyu Persecution of 1801 and was first exiled to Janggi. After being investigated again over the Hwang Sa-yeong Silk Letter Incident, he was sent to Gangjin. The persecution of Catholics and the political conflicts of the time formed the backdrop.

### Did he spend his entire exile at Dasan Chodang?
During the early years of his exile in Gangjin, he lived in various places, including taverns. He moved to Dasan Chodang in 1808. He continued his research and teaching there until his exile was lifted in 1818.

### When was the first draft of Mokminsimseo completed?
According to Saam Seonsaeng Yeonbo, as presented by Uri Yeoksanet, it was completed in the spring of 1818. After his exile was lifted in September of the same year, he continued revising it in his hometown. The completion of the first draft must be distinguished from the revisions made after his return home.

### What does the title Mokminsimseo mean?
Mokmin means governing and caring for the people. The name simseo reflects his circumstances, which made it difficult for him to put his ideas into practice himself. In the preface, the author explains why he chose the title.

### How is Mokminsimseo organized, and what does it cover?
It consists of 12 parts and 72 sections, covering the period from a local magistrate's arrival in office to his departure. Yulgi addresses how magistrates should govern their own conduct. Aemin explains the protection of the people, while Jinhwang explains responses to famine.

### How do Gyeongseyupyo and Mokminsimseo differ?
Gyeongseyupyo addresses reforms to state institutions and administrative structures. Mokminsimseo focuses on local administration carried out by magistrates. The two works differ in the scope of the reforms they discuss.

### Did he return to government service after his exile was lifted?
Jeong Yak-yong was unable to return to government service after his exile was lifted. He continued his scholarly work in his hometown, revising his writings. Jachan Myojimyeong records that efforts to reappoint him were blocked.

### Did Mokminsimseo solve Joseon's administrative problems?
It was passed down as a reference work on local governance, but the work alone cannot be said to have solved social problems. It also had the limitation of relying on the morality and responsibility of individual magistrates. The extent to which it was actually applied must be checked against administrative records from each region.

## Sources

- [National Institute of Korean History, Our History Net, Video Book Stories, 「Mongminsimseo」](https://contents.history.go.kr/mobile/ts/view.do?levelId=ts_b20)
- [National Institute of Korean History, Our History Net, 「Mongminsimseo (Sign Language Edition)」](https://contents.history.go.kr/mobile/ts/view.do?levelId=ts_b21)
- [National Institute of Korean History, Our History Net, Korean History through Historical Sources, 「Jeong Yak-yong's Views on Local Magistrates」](https://contents.history.go.kr/mobile/hm/view.do?levelId=hm_109_0050)
- [National Institute of Korean History, Our History Net, Chronology of Korean History, 「Jeong Yak-yong」](https://contents.history.go.kr/mobile/kc/view.do?levelId=kc_n310700)
- [Encyclopedia of Korean Culture, 「Jeong Yak-yong」](https://encykorea.aks.ac.kr/Article/E0050549)
- [Encyclopedia of Korean Culture, 「Mongminsimseo」](https://encykorea.aks.ac.kr/Article/E0018631)
- [Namyangju City, Jeong Yak-yong Resource Center, 「The Life of Master Jeong Yak-yong」](https://www.nyj.go.kr/www/contents.do?key=4763)
- [Gangjin Cultural Center, 「Historic Sites / Jeong Yak-yong Historic Site」](https://www.gjculture.or.kr/182)

## Images

![A scholar sorts manuscripts in a thatched hillside study amid spring blossoms, overlooking a river and village.](https://injoys.com/rails/active_storage/blobs/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Mzc4NjUsInB1ciI6ImJsb2JfaWQifX0=--09efd7bf3dc15faa392d4c4be42bab26e873ec34/ai-e34e4045.webp)
![Manuscript sheets, bound books, a brush and an inkstone on a low desk in a traditional room overlooking a courtyard.](https://injoys.com/rails/active_storage/blobs/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Mzc4NzUsInB1ciI6ImJsb2JfaWQifX0=--c4b68e0fdb59f2ea556ac1f49d9aa5e363632167/ai-849b0656.webp)