The Waegwan district (leased to Japanese firms) in Choryang had two entrance gates, one of which was called Sumun (literally water gate) and the other Bukmun (literally north gate). The Sumun was busier with passangers than the Bukmun. The present Donggwang-dong district covers most areas where the former Jaepansok-ji, Donghyangsa-ji, and Sumun stood. Sumun, which was located at the east edge of the present Donggwang Primary School, used to be utilized by Japanese officials staying at Waegwan when their official equipment and fixtures were transported into and out of the leased territory. Because of this function, the gate was also named Musangmun. Literally this means a gate of instability or inconsistency, thus connecting heavy business activity.

As for Bukmun, this gate was normally left open. Whenever there was a banquet at the Grand Banquet Room (Daehyang Daecheong) located in Daecheong-dong, guests were led through this gate.

The Donggwan building (East Gate) was formerly located in Donggwang-dong during the period of Chyoryang Waegwan. Donggwan (East Gate) had facilities for mooring and accommodating vessels arriving from Japan. The official residence for the Japanese manager of Waegwan and the grand hall (called Gaesi Daecheong) for commercial negotiation were located in the vicinity of this Donggwan gate. Because of this background, this area was later named Bon-jeong, or main street in Japanese, when the district was leased to Japanese firms.