Utilizing the power of a world law involves wielding a specific element according to the rules of its operation giving birth to unimaginable power that surpasses tier 5 peak standard. The said element is incorporated along with the power of world manifestation to use a world law. That's why only world manifestation experts can tap upon the powers of world laws.
Thankfully, the Demigod had only reached the entry of level of tier 6 Mana control and could only use the power of the world law of the sword in his normal attacks, otherwise Xuanyuan would have been unable to resist if he could incorporate it into his skills. This loophole gives Xuanyuan the opportunity to thoroughly experience this power for himself.
The Demigod and Xuanyuan continued trading attacks for over an hour and Xuanyuan couldn't help but be amazed as he gained understanding of the operations of the world law. Even though he couldn't use it yet, he could feel his understanding of Mana improving as time passed.