Summary: The ancestor unleashed his divine might, and the demon spirit knelt to beg for mercy.
On the fourth day of refining the treasure: Ancestor Han visited this ruin for the last time. He planned to completely refine the treasure today, take it with him, and from now on, it would join him in his battles across the heavens.
This time, while refining the treasure, Ancestor Han found that the spirit of the Devil Sword wasn't resisting at all. It let him do as he pleased. No matter how Ancestor Han operated or provoked, the demon spirit bowed its head in submission, not daring to compete with Ancestor Han.
Ultimately, Ancestor Han showed mercy and spared the demon spirit. He didn't destroy it, allowing it to continue controlling the Devil Sword.
After leaving the ruins, Ancestor Han decided to test the might of the Devil Sword. He infused it with a large amount of True Yuan and felt a smoothness as if it were new, without any resistance. He could say the handfeel was very good.