 The oldest confirmed extant cannon is the Heilongjiang hand cannon, dated to 1288 using contextual evidence.The "History of Yuan" records that in that year a rebellion of the Christian Mongol prince Nayan broke out and the Jurchen commander Li Ting who, along with a Korean brigade conscripted by Kublai Khan, suppressed Nayan's rebellion using hand cannons and portable bombards.The predecessor of the metal barrel was made of bamboo, which was recorded in use by a Chinese garrison commander at Anlu, Hubei province, in the year 1132.