Even if Lin Tian paid no heed to any of that and wanted to replace the Four Zhuxian Swords with four divine swords, he had no way to do so.
After all, nowhere in the Primordial World did four swords exist that were Innate Supreme Treasures, let alone Chaos Supreme Treasures.
If this problem remained unresolved, then sooner or later, Lin Tian's Executioner Immortal Sword Formation would probably become useless.
In the Primordial World, he was not the only one making progress. The other Saints would improve as well.
Though the other Saints could never match Lin Tian's rate of progress, a day would come when their might exceeded what the Executioner Immortal Sword Formation laid out with the Four Zhuxian Swords could restrain.
Not to mention that Lin Tian's enemies were not limited to those Saints chasing his heels and eating his dust.
Perhaps even that figure standing high above them all would one day cross blades with Lin Tian!
When that happened, these four swords would truly become chicken ribs-too little meat to savor, yet too much to simply discard.
Once deployed, they would not only fail to restrain his enemies, but even fall short of Lin Tian's own strength. Such Four Zhuxian Swords would serve no purpose beyond being put away as a keepsake, or simply bestowed upon a disciple of the Spirit Vine Sect.
But now, the appearance of chaos adhesive gold had erased this regret of Lin Tian's!
Chaos adhesive gold could upgrade Spirit Treasures, and it could certainly elevate the Four Zhuxian Swords from top-grade innate Spirit Treasures into Innate Supreme Treasures.
This might seem like a tiny improvement, with their restrictions merely increasing from forty-eight to forty-nine, just one additional layer, but the might of the Four Zhuxian Swords could increase tenfold, or