"The 'Mechanical Technique: Azure Dragon Chapter' simply states the use of Silver Essence Iron," the text began. "Besides being used as a weapon, like other metals, its most important role is as a 'Neutralizing Agent' for various metals."
Of course, the use of 'Neutralizing Agent', according to the 'Mechanical Technique,' was fundamentally an original creation of Mechanical City.
Even the process of Mechanical Melting Iron required Silver Essence Iron.
However, Wang Sheng was not in the position to concern himself with these details now.
After he returned to the stronghold, he had melted all the Silver Essence Iron he possessed, and then refined his Flying Sword with it.
The Flying Sword was the thing he valued most at this moment.
Therefore, his top priority was to make his Flying Sword as powerful as possible.
As for the other components within the 'Mechanical Technique,' Wang Sheng did not pay them much heed.