Douluo: Modify the Future

(Douluo fanfic, no heroine, systematic, low system presence, not too outrageous, protagonist behind the scenes) is the guardian of the future, and the person who changes the future. Let's see how the protagonist changes Tang San's future path, and how he changes the path of Douluo Continent. Everything in the future is possible, giving Douluo a perfect ending. Jace wields a hammer and a cannon across the continent, destroying nobles, destroying empires, rebuilding the order of Douluo Continent, and allowing civilians and soul masters to survive with each other.