a celadon vase depicting cranes

12thcentury 2019 adorned ancient art attraction bird bottle broad broadshouldered celadon ceramic cheongja choson clay confucian crane cranes depicting drawing drawings dynasty educational facility famous gaeseong glazes goryeo heritage highest historical history institution jar kaesong korea koryo maebyeong may medieval mun north old red sanggam seonggyungwan shouldered site taesong tourism traditional unhak vase