"Yea, easy. Go to the North Gate intersection. There is a NPC called Master of Processing. Just click on him and click around and you can see how to make black diamonds and other items for making materials for making a weapon or armor.

I presume this is what you are talking about. You need materials for making armor or weapons.

Now FYI, in Mondshine, you can buy level 40s armor and weapons there. Above that you have to either make or buy your own."