He was suddenly struck by an epiphany; it seemed that it was very difficult to complete heavenly refinement with heavy silver as its ability to withstand tribulation lightning was limited by the caliber of the metal, even after undergoing soul refinement. It was no wonder that Zhen Hua had attempted heavenly refinement with an alloy comprised of two different types of metals; he had most likely taken into consideration the tolerance of the metals themselves. This was the value of experience!

Zhen Hua had divulged a lot of knowledge to him, but there were some things that he neglected to mention as the best way to learn was through practical experience.

During this heavenly refinement process, Tang Wulin had already learned many things.

If it weren't for his Infernal Lightning Vine, even he would perhaps be unable to protect these three pieces of metal. This tribulation lightning was extremely fearsome, and even his body may not be able to withstand...