Ha ejang wang Yangpyeong Haejangguk Gangnam Nonhyeonjeom is a Korean restaurant in Nonhyeon, Gangnam, Seoul, that serves haejangguk. Its main dish, Yangpyeong haejangguk, has a clear, mild broth. The restaurant is open 24 hours, so meals are available late at night. The Yangpyeong haejangguk comes with few ingredients by default.