The battle between Saine, Filth, and Yanxian was still ongoing.
This local battlefield was, of course, inferior to the main battlefield where Locke and others were besieging the Evil Swamp Time-Space Dimension Lord.
But to Saine, the research value here was not low.
Filth was a massive pollutant without any concrete form.
Its true body was like a filthy nebula that constantly churned, expanded, and contracted.
Within the nebula were streams of rotten mud, black bubbles, and countless polluted lingering thoughts whose faces could not be distinguished.
For ordinary Level-12 Strong Practitioners, the most troublesome thing about fighting Filth was that they could not truly lock onto its core.
You could blast apart a portion of its Evil Swamp Origin.
But as long as the deep source core of that massive pollutant still existed, it could continuously reassemble itself.
Yanxian was completely different.
Although it also possessed powerful traits of aberration, its rule form was closer to that of the Evil Swamp Time-Space Dimension Lord.
Its mind was unclear, and much of the time it was more like a Drowning Soul Origin Echo wrapped in the identity of a Temple Lord.
It was precisely because of this that the Evil Swamp Origin empowerment Yanxian received on the battlefield far exceeded Filth's.
At first, this was only Saine's judgment.
But as the battle continued, from the intelligence sent by Star Mark and Jiang Qi, as well as some information the Evil Spirit King had previously supplemented, he gradually pieced together Yanxian's even earlier past.
Yanxian had not been like this from the beginning.
It had once been one of the most rational Temple Lords in the Evil Swamp Pantheon.
For a very long period, Yanxian had even been highly valued by the Evil Spirit King.
Because it was not like Filth,