Some butterfly swords had a long narrow blade that emphasized stabbing. While a deadly stabbing blade with a sharpened point—known as "Red Boat" knives—was used by Chinese revolutionaries in the Wing Chun lineage, modern Wing Chun practitioners tend to prefer a blade profile with a wider belly that emphasizes chopping and slashing. Wing Chun lore attributes this to the desire of Monks to maim rather than kill. These knives generally have a quarter circle style tip suitable only for chopping/slashing and not stabbing, or a shallower curve to a more pointed tip that will accommodate both.