# Sai On

_Sanshikan of Ryukyu; Regent, instructor, and advisor to King Shō Kei (1682-1761)_

Canonical: https://diginpl.com/people/sai-on
Last updated: 2026-11-02

> Sai On (蔡温) (1682–1762), or Cai Wen in Chinese, also known as Gushi-chan Bunjaku , was a scholar-bureaucrat official of the Ryūkyū Kingdom, serving as regent, instructor, and advisor to King Shō Kei. He is renowned for the many reforms he initiated and oversaw, and is among the most famous figures in Okinawan history. He edited Chūzan Seifu, a rewrite of Chūzan Seikan by his father Sai Taku.

## Quick facts

- **Born:** 1682 ([Wikidata](https://www.wikidata.org/wiki/Q851766#P569))
- **Place of birth:** Kumemura ([Wikidata](https://www.wikidata.org/wiki/Q851766#P19))
- **Died:** 1761 ([Wikidata](https://www.wikidata.org/wiki/Q851766#P570))
- **Citizenship:** Ryukyu Kingdom ([Wikidata](https://www.wikidata.org/wiki/Q851766#P27))
- **Occupation:** politician; philosopher; agronomist ([Wikidata](https://www.wikidata.org/wiki/Q851766#P106))
- **Positions held:** Sanshikan (1728–1752) ([Wikidata](https://www.wikidata.org/wiki/Q851766#P39))

## Questions

**When was Sai On born?**  
Sai On was born on 1682 in Kumemura.

**What positions has Sai On held?**  
Positions held by Sai On include: Sanshikan (1728–1752).

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## Sources

- [Wikipedia (English): Sai On](https://en.wikipedia.org/wiki/Sai_On) — [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)
- [Wikidata item Q851766](https://www.wikidata.org/wiki/Q851766) — [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/)
- [Image: Sai On.jpg by Unknown author Unknown author (Public domain)](https://commons.wikimedia.org/wiki/File:Sai_On.jpg)

## Licence and attribution

Text from the Wikipedia article Sai On, licensed under CC BY-SA 4.0. This page's text is shared under the same licence. Facts from Wikidata (CC0). Image: Sai On.jpg — Unknown author Unknown author, Public domain.

## Cite this page

"Sai On". DigiNepal. Last updated 2 November 2026. https://diginpl.com/people/sai-on. Retrieved 13 November 2026.