The workshop venue is very next to the Yeosu Expo train station (여수엑스포역). It takes roughly less than ten minutes on-foot from the station to the workshop venue.
For more details, please visit:
http://www.expo2012.kr/web/bbs/content.php?co_id=sub016
https://www.yeosu.go.kr/micevr/16_expo2012/www/index.htm