The Fairy Tale of Dog Treasure

Zhang Fan, a young man who was hungry, got a piece of dog treasure. This thing looks like a black stone and is extremely ordinary, but it can ripen elixirs and strengthen magic weapons! In one day's work, ten years of medicinal herbs turned into a hundred-year-old elixir, and the Huangpin Spiritual Sword turned into a Xuanpin Spiritual Sword... From then on, Zhang Fan, who had mediocre qualifications, embarked on a path of cultivating immortality against the heavens.