The P'yŏngbuk Line is an electrified standard-gauge secondary trunk line of the Korean State Railway in North Pyŏngan Province, North Korea, running from Chŏngju on the P'yŏngŭi Line to Ch'ŏngsu; it meets the Ch'ŏngnyŏn P'arwŏn Line at Kusŏng, and at Ch'ŏngsu, via a bridge across the Yalu River, it goes to Shanghekou, China, where it connects to China Railway's Fengshang Railway to Fenghuangcheng. Wikipedia