Logically speaking, the war against the demons had already become quite massive.
Yet, Fang Jie hadn't expected that the contents of the Treasure Box would still lack many things useful to him.
In Fang Jie's view, the only useful item was a set of blueprints for a Functional Building, an Underwater Mine. Yes, an Underwater Mine, which is essentially the same as a mining field.
The difference was that this type of Underwater Mine could be built in water.
In the ocean, after discovering mineral deposits, it was now possible to directly construct mining facilities underwater, something that had not been possible before.
However, it was a good thing, after all. In the region where Fang Jie had been, he didn't know whether there were minerals underwater, and even if he did, they probably wouldn't be many.
