How are cold weapons classified?

The development of cold weapons has gone through three stages: Stone Age, Bronze Age and Iron Age. Cold weapons are divided into stone, bone, bronze and other weapons according to their materials, and offensive weapons are divided into protective fittings according to their uses. Offensive weapons can be divided into three categories: fighting, long-range shooting, walking weapons, vehicle-mounted weapons and siege equipment, and short weapons and long weapons according to their structure and shape.