Having made his decision, Han Li naturally no longer hesitated. He flipped a palm over, and the jade slip that the elderly man had given him appeared in his hand.

On this occasion, he was going to study the refinement method for the flying swords before he worked on the sword art.

He had already briefly read through the refinement method last time, but this was an important matter, so Han Li naturally had to read it again in detail.

A short while later, Han Li withdrew his spiritual sense from the jade slip and narrowed his eyes slightly in contemplation.

According to the jade slip, if he wanted to rid his flying swords of impurities, there were three methods he could employ.

The simplest of those methods required no extra materials; he simply had to use his Nascent Soul flames to slowly refine all of the non-wood-attribute materials in the flying swords.

That was the simplest method and also one that incurred the least amount of risk.

However, all of the materials in his flying swords had already fused as one, and it would take an extremely long time to refine them in such a way. In fact, even three or four centuries...