"Perhaps no one has figured out how yet." Which is what Xue Yang intends to do. "Basically it is like inputting spiritual energy into the sword. For cultivators when they use their sword it is already linked to their spiritual energy. They don't have to think about alternate methods. For me, my spiritual weapon isn't here so I need to find a way to infuse energy into a normal blade."

And the blade might not be able to handle it. It is a test he will have to be careful about because he would hate to shatter his blade after just getting it.