On a warm spring morning in 1984, Dong Yao-hui and his two young friends, Wu De-yu and Zhang Yuan-hua, pulled on military surplus backpacks and boots and set out on a hike along a stretch of the Great Wall of China.
원문출처 : https://www.cnn.com/travel/article/great-wall-china-dong-yao-hui/index.html
원문출처 : https://www.cnn.com/travel/article/great-wall-china-dong-yao-hui/index.html