The feeling of the complete fusion of their auras was extremely mysterious, and to be able to reach this step, was definitely harder than stepping into heavens itself. After Ling Jie subdued Celestial Yang Sword, his final wish was to completely subdue Celestial Yang Sword, and fuse with its aura. Although his talent was extremely good, he knew that it would take him at least years, or even dozens of years to reach his ideal. And if it was someone else, it would be impossible for an extremely large number of them to succeed.