OK let's do this.. SOTW is up to you.. if you see metal as a hunk of steel cool... if you see it as Metalica or AC|DC fine.. TOTW is a bit different since its elemental. Perhaps look into elemental stuff? The Pagans use elements, so does science. Its about interpretation. The Chinese element of Metal can be seen as part of the generating cycle as Metal collects Water, as part of the controlling or destructive cycle since Metal splits wood, etc.
Google and Wikipedia are great for finding info.