In Korea, the earliest evidence of armoured cavalry is a mid-4th century AD mural of the Goguryeo era (37 BC–668 AD). Lamellar armour was used for both men and horses, with the soldiers carrying lances. Another Goguryeo-era mural shows an armoured cavalryman wielding his lance using both hands, unlike the couched-lance used by medieval European knights. During the Koryo dynasty (918–1392) barding (horse-armour) was still used, but the number of barded heavy cavalry remains unknown. By the early years of the Chosun dynasty (1392–1897) barding was no longer used, and the horseman's main weapon was the bow, with lances and other close-combat weapons seldom used. However, starting from the 17th century at least, the Korean cavalry began to carry two-handed flails along with bows.