Wikipedia
Sangnok-gu
Sangnok-gu is a district of the city of Ansan in Gyeonggi-do, South Korea. the name `Sangnok` is came from the name of famous book Sangnoksu (meaning "evergreens"). It is written by Sim Hoon. The location backgroud in Sangnoksu is Ansan. so Sangnok is related with ansan. that is the reason why people choosed `sangnok` for district`s name.