The power of the Evil God, unlike that of the True God who relies solely on himself, depends on the darkness and resentment in people's hearts. The more evil the worshippers and the more bad deeds they commit, the stronger his power becomes.
This Evil God hasn't been nourished by the dark side of human hearts for hundreds of years, and his power has nearly dissipated. Of course, even if most of his power is gone, he isn't someone Situ Shuangshuang can easily defeat. After all, he's still a god, albeit an evil one!
Now, being cornered by Situ Shuangshuang, the Evil God unleashed his most potent attack—the evil poison he had accumulated over a millennium!
With the evil poison released, all Situ Shuangshuang could do was retreat; she dared not come into contact with it at all! The battle was becoming unwinnable!
If you can't win, then don't fight. To avoid contamination, Situ Shuangshuang threw out hundreds of amulets from her stash!