[2] The restaurant's founding family were from Pyongyang (now in North Korea).

[3] Before opening the restaurant, they had been operating a factory in Manchuria.

Upon the liberation of Korea, their factory was confiscated and they moved to Incheon and established the restaurant.

[3] The restaurant has reportedly acquired its meat from the same butchershop since its inception.

[1] The haejang-guk is reportedly only served before noon;[3] the restaurant opens at 5 a.m., reportedly to cater to people who leave for work early in the morning.