The Hwangbichangcheon mirror refers to a type of bronze mirrors inscribed with the phrase(煌丕昌天, “superbly dazzling and flourishing sky ”) and a motif of a large vessel with people sailing through the rough sea full of creatures like a dragon, makara, and large fish. Seventy-one mirrors of this type are extant, and they are classified into three groups 1) mirrors featuring the sea, a vessel, fish, and dragon, which were made by melting bronze mirrors from China and molding them; 2) those adorned with the sun, moon, sea, a vessel, fish, and dragon; and 3) those with only the inscription but no design. An analysis of associated relics and comparisons with the design of other contemporary artefacts indicate that these bronze mirrors were produced and gained popularity during the late 11th and 12th centuries. The motifs on hwangbichangcheon mirrors presumably depict the ancient story of a merchant who bravely went to the sea in search of treasures. He came across obstacles in the process, yet he was able to overcome them with the aid of Buddha, a story found in a variety of Buddhist scriptures.