Major developments: Gunpowder is utilized in Chinese warfare and an assortment of gunpowder weapons appear. Fire arrows utilizing gunpowder as an incendiary appear in the early 900s and possibly rocket arrows as well by the end of the century. The gunpowder slow match is used for igniting flame throwers. The ancestor of firearms, the fire lance, also appears, but its usage in the 10th century is uncertain and no textual evidence for it exists during this period.