"Sa Qi is quite a terrifying thing. Once invaded, one immediately loses their sanity and goes mad, potentially even attacking our own people."
"This is also why we dread these ghost creatures controlling the source of Sa Qi. Now that they control the Sa Qi, once they use this Yin Sha Array, if we act recklessly, we can easily be struck by the Sa Qi. Even the controller of the Yin Sha Array must use a special method to isolate the Sa Qi, so that they can remotely control Sa Qi against the enemy."
These people explained without any omissions, fearing that Yang Chen might not know these things. After all, they were still hoping that Yang Chen could help them break the Sa Qi formation.
What they didn't know was that Yang Chen's understanding of Sa Qi was far greater than that of everyone here.
It wouldn't be an exaggeration to say that he had complete control over Sa Qi.