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Wiki information Daehyeon:

Daehyeon-dong, Seoul
Neighborhood, Location, Dated location, Statistical region

Daehyeon-dong is a legal dong, neighbourhood of the Seodaemun-gu district in Seoul, South Korea and is governed by its administrative dong, Sinchon-dong's office.

Daehyeon-dong, Ulsan
Location

Daehyeon-dong is a dong, or neighborhood, of Nam-gu in Ulsan, South Korea. Originally Yaeum 2-dong, the neighborhood was renamed in 2007.