Editing Sejong the Great (section)

==Health issues and death==
[[File:여주 영릉과 영릉 세종 영릉 능침(항공).jpg|thumb|right|The tomb of Sejong the Great]]

Sejong suffered from eye diseases and deteriorating vision and likely had health issues linked to excessive meat consumption all throughout his life.{{sfn|세종실록 92권, 세종 23년 2월 20일 정해 1번째기사}} Sejong's love for meat is clear from a comment by King Emeritus [[Taejong of Joseon|Taejong]]. When Sejong stopped eating fish and meat to mourn after the death of [[Jeongjong of Joseon|Jeongjong]]{{Snd}}Sejong's uncle and [[Taejong of Joseon|Taejong]]'s older brother{{Snd}}[[Taejong of Joseon|Taejong]] remarked that Sejong had always found it hard to eat without meat since he was a child.{{sfn|세종실록 9권, 세종 2년 8월 29일 을축 3번째기사}} Sejong also started having musculoskeletal pain at the age of 22. One day he was supposed to organize a farewell party for the emissaries to the [[Ming dynasty]] but was in too much pain to do so. Sejong said: "My waist and back are stiff and immobile, so it is hard to bend or straighten."{{sfn|세종실록 68권, 세종 17년 4월 1일 임인 1번째기사}} There is speculation that he had diabetes, but there is inadequate evidence for a modern medical diagnosis. There is also an account of Sejong's having a disease that roughly translates to ''palsy'' ({{Korean|풍증|風症|labels=no}}) and [[essential tremor]] ({{Korean|수전증|手顫症|labels=no}}), but terminology of the 15th century Korean traditional medicine does not translate well.{{sfn|세종실록 112권, 세종 28년 4월 30일 정묘 8번째기사}}

Sejong died on 8 April 1450, on the ''[[Gregorian calendar|Gregorian]]'' calendar, at the residence of Grand Prince Young-eung at the age of 52.{{sfn|세종실록 127권, 세종 32년 2월 17일 임진 1번째기사}} He was buried at [[Royal Tombs of the Joseon dynasty#Yeongneung (영릉)|''Yeongneung'']] ({{Korean|hangul=영릉|hanja=英陵|labels=no}}) in the same mound as his wife, [[Queen Soheon]], who had died four years earlier. His tomb is located in [[Yeoju]], South Korea.

His successor was his first son, Yi Hyang (posthumously [[Munjong of Joseon|King Munjong]]). Sejong was concerned that sickly Munjong would die early and leave his vulnerable young son to reign, so he asked scholars from the [[Hall of Worthies]] to look after his young grandson, [[Danjong of Joseon|Danjong]].{{sfn|세종실록 127권, 세종 32년 1월 18일 갑오 1번째기사}} As predicted, Munjong died two years after his ascension, and the political stability enjoyed in the past decades disintegrated when Danjong became the sixth king of Joseon at the age of 12.{{sfn|세조실록 10권, 세조 1년 10월 10일 기유 1번째기사}} Eventually, Sejong's second son, Grand Prince Suyang (later known as [[Sejo of Joseon|King Sejo]]), usurped the throne in 1455. When [[six martyred ministers|six court officials]] were implicated in a plot to restore his nephew, Sejo abolished the Hall of Worthies and executed Danjong along with several ministers who served during Sejong's reign.{{sfn|세조실록 4권, 세조 2년 6월 6일 갑진 3번째기사}}