Editing Smoke signal (section)

=== [[Goryeo]] and [[Joseon]] ===
The [[beacon]] fire signal system (bongsu, 봉수, 烽燧) was formally institutionalized during the early [[Goryeo]] period in 1149 (the 3rd year of King [[Uijong of Goryeo|Uijong’s reign]]).<ref>{{Cite web |title=봉수 |url=https://terms.naver.com/entry.naver?docId=577122&cid=46633&categoryId=46633 |access-date=2025-04-26 |website=terms.naver.com |language=ko}}</ref> According to historical records, it was enacted by [[royal decree]] following a memorial submitted by Jo Jin-yak (曺晋若), the Military Commissioner of the Northwestern Region (Seobukmyeon Byeongmasa, 西北面兵馬使). Under this system, signals were sent using smoke during the day and fire at night.<ref>{{Cite web |title=봉수 - 디지털김천문화대전 |url=https://gimcheon.grandculture.net/gimcheon/toc/GC03200634 |access-date=2025-04-26 |website=gimcheon.grandculture.net}}</ref> The method of bongsu involved using fire at night and smoke during the day. The signaling system followed a five-tiered structure: one [[torch]] (geo, 炬) was lit in times of peace; two when enemy ships were spotted at sea; three when they approached the coast; four when they engaged with Korean naval forces; and five when enemy troops landed on shore. These signals were immediately reported by local commanders(ojang, 오장, 五將) to regional governors. In the capital, the Ministry of War (Byeongjo, 병조, 兵曹) monitored the beacons and reported the situation to the Royal Secretariat (Seungjeongwon, 승정원, 承政院), which then informed the king.<ref>{{Cite web |last=문화관광 |first=창원시 |title=창원시 문화관광 |url=https://culture.changwon.go.kr/index.changwon?bbsId=BBSMSTR_000000000051&contentId=379&menuNo=15040000&nttId=619&upperMenuId=15040000 |access-date=2025-04-26 |website=new.changwon.go.kr |language=ko}}</ref><ref>{{Cite web |title=봉수 |url=https://terms.naver.com/entry.naver?docId=3571693&cid=58940&categoryId=58956 |access-date=2025-04-26 |website=terms.naver.com |language=ko}}</ref>