Ten Foot Demon

The Three Thousand Daos were naturally differentiated by strength. As the five elements were born out from Yin and Yang, they were above the five elements.

The Yin Yang and five elements came from the Beginning and ended with the End. Which is why they were all countered by the Unlimited Beginning and End Technique. There was a difference in order and pretty much couldn't be crossed.

The Fuling God Sword of Sword Sect could flip and invert, causing Zong Shou's Unlimited Beginning and End Technique to be beneath the Yin and Yang and five elements and be countered instead.

A more simple explanation which is originally based on the Heaven and Earth Laws, an iron sword would beat a wooden sword. However, after the Float word acted on it, wood would beat iron. This was the Float word ability, inverting and permuting.