This is the Chinese restaurant ‘Holy Noodle’, the base of the neighbourhood deliverymen group leader Baek Gong-gi (Kim Ki-doo); at the end of episode 1 and at the start of episode 2 of Strongest Deliveryman (최강 배달꾼) (KBS2, 2017), he had a showdown with Choi Gang-soo (Go Kyung-pyo) that almost took them over the edge of the roof. He conceded defeat, and returned the stolen bowls that were stolen by the other deliverymen in his group.
The actual store is also a Chinese restaurant in real life, of which its Chinese name [八先生 – bā xiānshēng] literally translates to ‘8 Misters‘. It is opposite the Hwajinpo Buckwheat Noodles shop (화진포막국수 – its green sign can be seen from the rooftop fight scene) and further down the street, is the cinema CGV Gangdong.
9-19 Seongnae-ro 8-gil, Seongnae 1(il)-dong, Gangdong-gu, Seoul
서울특별시 강동구 성내로8길 9-19
(서울시 강동구 성내동 550-8)
Geolocation: 37.528607, 127.124628
Subway station: Gangdong-gu Office [강동구청역], Line 7, Exit 2
— submitted by Mich