structural:summarization, stylistic:style_transfer
Chinese antiquity

Chinese iron swords made their first appearance in the later part of the Western Zhou dynasty, but iron and steel swords were not widely used until the 3rd century BC Han dynasty. The Chinese dao (刀 pinyin dāo) is single-edged, sometimes translated as sabre or broadsword, and the jian (劍 or 剑 pinyin jiàn) is double-edged. The zhanmadao (literally "horse chopping sword") is an extremely long, anti-cavalry sword from the Song dynasty era.