Although Ku San Sang was the Guardian of the Eternal God Wheel during his life, refining the Eternal God Wheel was truly a painful task for him.
After so many years, he had merely made a start.
Or rather, he had just figured out where to begin.
Even without Ding Huan's interference, if Ku San Sang wanted to refine the Eternal God Wheel, he would still need to see when he could touch the Wheel Kill of the Eternal God Wheel.
However, as long as Ku San Sang kept refining the Dao Principle of the Eternal God Wheel, he would eventually come into contact with the Wheel Kill.
With Ku San Sang's Dao cultivation, once he touched the Wheel Kill, which is the Eternal God Peak, he would be able to refine the Wheel Kill.
He wouldn't even need the Wheel Heart.
Once Ku San Sang refined the Wheel Kill, with the help of the Wheel Kill of the Eternal God Wheel, refining the Eternal God Wheel might not even take ten years.