Cheoin is widely known as the old name for Yongin.
It is also the name used to this day for cultural items such as Cheoin Fortress, Cheoin Cultural Festival, and
Cheoin Music Festival. The name was adopted as the name of a Gu (ward) of an area covering the eastern region
of Yongin, making the name quite well known.

The current name, 'Yongin' was formed by taking 'Yong' from Yonggu-hyeon and 'In' from Cheoin-hyeon in 1413,
during the 13th year of the reign of King Taejong of the Joseon Dynasty.
The name of the Gu (ward) office of the eastern region of Yongin was named 'Cheoin' by deference to the spirit of
national pride and defense that defeated the aggression of Mongolia in the Goguryeo Period.