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Yan Yu once again accelerated with his Shifting Technique, dodging the attack. The character seal struck the ground, slicing into it as easily as if cutting tofu, and continuing straight downward—his expression finally grew solemn.
Given the current limit on spiritual energy density, the Nine Heavens Yin Demon Prison Banner shouldn't have been able to unleash that character seal, and its power shouldn't have been this weak either.
It must be the nighttime bans in this Mysterious Realm that provide a cultivation boost to all specters, enabling the Ghost General to barely meet the minimum requirements to activate the Nine Heavens Yin Demon Prison Banner.
Even so, a Ghost General capable of releasing the Nine Heavens Yin Demon character seal was not an opponent that either the Zhenhai Team or the Flying Dragon Battle Team could handle at this stage—not that they definitely couldn't win, but even if they did force a victory, the cost would surely be extremely heavy.