Although Rahula was somewhat disappointed by the Three Clans' truce, the slaughter wrought by twenty thousand Yuanhui Eras of war had still left him thoroughly sated.
The war between the Three Clans had also allowed the tempering of the Four Immortal Slaughtering Swords to be completed.
Indeed, the Four Immortal Slaughtering Swords had finished tempering. Because Rahula had forged them himself, and possessed no supreme treasure capable of transforming the acquired into the innate, they could only be considered a Houtian Spiritual Treasure.
Yes, they were not even an acquired supreme treasure, merely a Houtian Spiritual Treasure.
Of course, they were a Top-Grade Houtian Spiritual Treasure.
Acquired supreme treasures were exceedingly special. Even for Rahula, forging one would be no easy feat.
However, if he continued nourishing the Four Immortal Slaughtering Swords with slaughter aura and blood fiend aura, then, provided he had enough of both and nurtured them long enough, they would certainly advance into an acquired supreme treasure!
Though the Four Immortal Slaughtering Swords were currently only a Top-Grade Houtian Spiritual Treasure, the difference between Houtian Spiritual Treasures and Innate Spiritual Treasures in the Primordial World was actually just a strand of innate imperishable spiritual light.
Forging a Houtian Spiritual Treasure also required Great Dao source.
However, because Innate Spiritual Treasures were nurtured into existence by heaven and earth rather than forged by hand, their Great Dao source harmonized perfectly with them, achieving flawless perfection.
Houtian Spiritual Treasures, on the other hand, were forged by hand, and their Great Dao source also had to be incorporated manually. Since that source had not been naturally nurtured within the treasure itself, perfect harmony was impossible, no matter what.
This was also why Houtian Spiritual Treasures were generally inferior to Innate Spiritual Treasures.
Besides lacking a strand of innate imperishable spiritual