P'yŏnghwa ŭi sisŏn ŭro pundan ŭl poda Nambuk kwan'gyesa 20-changmyŏn - Chŏng, Yŏng-ch'ŏl; Chŏng, Ch'ang-hyŏn 1964- (Yuni Sŭt'ori, 2017)