Yang Chen carefully observed now.
Others couldn't do it, but Yang Chen accomplished it effortlessly. He deployed his Lingxi Divine Pupil, which could easily penetrate the body of this Demon Devil and discern its current key situation.
"So that's how it is..."
Yang Chen muttered to himself.
The root cause for these Demon Devils to lose control and become engulfed with evil aura was actually the Demonic Qi within their bodies.
Sa Qi is difficult to control, and in fact, the Earth Fiend Clan is considered extremely talented among other races. According to the Ice and Fire Sky Phoenix, even in their domain, their control over Sa Qi is quite average.
However, the Earth Fiend Clan managed to control it utilizing the combination of the Ancient Monster Clan and the Ancient Demon Clan.
Among them, the Ancient Demon Clan is the key.
By relying on the Ancient Demon Clan's Demonic Qi suppression, they can suppress this Sa Qi.
