Materials used to make a traditional bow (L-R) horn of a water buffalo, bladder of a croaker, spinal sinew of cattle, mulberry tree, oak and bamboo are on display at the workshop of South Korean bow artisan Kwon Yeong-Hak in Yecheon-gun, Gyeongsangbuk-do, South Korea, 26 February 2015. (Photo by Jeon Heon-Kyun/EPA)
