Editing Astronomical clock (section)

===South Korea===
* [[Honcheonsigye]]: is an astronomical clock made by  Song Yi-Yeong ({{Korean|hangul=송이영|hanja=宋以潁|labels=no}}), a professor of Gwansanggam ({{Korean|hangul=관상감|hanja=觀象監|labels=no}}) (one of the scientific institution of [[Joseon dynasty]]) in 1669.<ref>{{Cite web |title=국보 혼천의 및 혼천시계 (渾天儀 및 渾天時計)|url=https://www.heritage.go.kr/heri/cul/culSelectDetail.do?VdkVgwKey=11,02300000,11&pageNo__=1_2_1_0&pageNo=1_1_2_0|language=ko}}</ref> It was designated as [[National treasures of South Korea|South Korean national treasure]] number 230 on August 9, 1985. The clock used the [[alarm clock]] technology created by [[Christiaan Huygens]] in 1657.<ref>{{Cite web
 |title = 340년 전 혼천시계 그대로 볼 수 있다
 |date = 18 August 2009
 |url = http://www.hani.co.kr/arti/society/society_general/371960.html
 |language=ko
}}</ref> This relic shows that Huygens' technology was spread to East Asia in just 12 years. Also, It demonstrates the astronomy and mechanical engineering technology of the [[Joseon dynasty]]. Korea has been making [[armillary sphere]] since the 15th century as part of [[King Sejong]]'s technology development policy, and this clock is an important historical document that shows the fusion of East Asian astronomy and European mechanical technology.