Chapter 1491: Grinding Works

In the history of Tang Wulin's cultivation, he had undergone multiple processes of achieving mastery through comprehensive understanding. On the other hand, it was a brand-new experience for him this time. Changes began to appear to him after he had completed Heavenly Refinement and comprehended the depth of elemental calamity. 

Tang Wulin discovered that he was not only forging metal but also himself during Heavenly Refinement. On the other hand, Heavenly Refinement was a process of removing the flaws and retaining the essence. He preserved the essence for further refinement while rejecting the dross continuously so that he could become more powerful.