The spiritual power contained within the spirit items, great demon flesh and blood, and heavenly treasures that the Spirit-Hidden Rat had devoured over the years had not been wasted. Instead, it had become fuel for purifying its Void Sun Rat bloodline!
It was somewhat similar to the True Dragon clan's Scale-Scraping Pool. Mixed-blood dragons with impure bloodlines could use the pool's mysterious power to purify their bloodlines and transform into pure-blooded True Dragons. However, this method was exceedingly violent. A mixed-blood dragon entering the Scale-Scraping Pool had to endure the agony of being carved by a thousand blades before it could thoroughly cleanse its blood and replace its marrow.
According to Cao Ren, during the two hundred years he spent cleansing his bloodline in the Scale-Scraping Pool, he had suffered unbearable pain every moment, as if his five viscera and six bowels, marrow and flesh, three souls and seven spirits were all being subjected to death by a thousand cuts.
Among the mixed-blood dragons who had entered the Scale-Scraping Pool alongside him, including members of the Xuanyuan Aristocratic Clan who possessed True Dragon bloodlines, some failed to persevere and gave up early, while others simply died within the pool. In the end, this too was another form of "defying heaven and changing one's fate," not something that could be accomplished with ease.
The situation occurring to the Spirit-Hidden Rat was far gentler by comparison.
The spiritual power originally meant to raise its cultivation had turned into fuel for tempering its bloodline, gradually causing its life form to approach that of the Void Sun Rat.
Even a violent method like the Scale-Scraping Pool had taken two hundred years to completely transform Cao Ren into a pure-blooded True Dragon. With this gentler method, it would take the Spirit-Hidden Rat at least several