Stone adze and chisels are both ground stone tools with one beveled cutting edge. Generally, they are differentiated depending on the width of the utensil, with wider utensils categorized as adzes and narrower ones as chisels. However, there is still no universal standard of differentiation and so they are often defined together as “adzes and chisels.”
　
　　The stone materials used were of two main types; A total of 28 artifacts or 58.3% were made out of mud slate (the mud referred to in earlier reports has in fact qualitatively change). The main colors are light green and gray with a highly refined texture. In areas where the stone is broken we can observe the structure of parallel slates. A total of 20 artifacts or 41.7% were made out of nephrite or serpentine. The main colors were a mottled green and gray, though some of the surfaces had been turned white as a result of exposure to the elements.
　
　　Observing the marks made during the production of this batch of adzes and chisels we can broadly tell that that the prototypes were made by grinding, sawing and breaking method or simply by flaking method. This was then round until a blade line was created. The top of these artifacts are often not even, showing signs of sawing and breaking method or flaking. The two sides and both ends of the artifacts are usually ground flat with square corners. Signs of wear and tear on the cutting edge are mainly and mostly seen on the corners though with some seen on the central area of the cutting edge.