Equipment and materials
Upgrade equipment at a blacksmith
Spending Copper, Steel, and Leather on a selected item improves its equipment level and combat power.
A battlefield blacksmith or the Hidden Village at Mt. Tianzhushan.
Repeatable whenever you have sufficient Copper and required materials. Each upgrade spends resources; it does not generate materials.
Stop upgrading once the cost would leave too little material for a more important item or your current gear handles the mission comfortably.
Open a guide to find other locations and see what the item is used for.
Spending Copper, Steel, and Leather on a selected item improves its equipment level and combat power.