Completion of the Gyeongguk Daejeon

Timeline

1. 1460–1481Hanyang · JoseonKing Sejo established the Office for the Detailed Revision of the Six Codes, ordering Choe Hang, Noh Sisin, and others to compile the six codes; after trial editions in the second and fifth years of King Seongjong and a fifth revision by the Revision Office in the twelfth year, the final version was completed in 1481 and declared unalterable.
2. 1485Hanyang · JoseonOn the first day of the first month of 1485, the Eulmyo edition of the Gyeongguk Daejeon (also called the Eulmyo Code) was officially promulgated and enforced, becoming the basic legal code of the Joseon dynasty and establishing the six-code system with the unalterable status of ancestral statutes.