C912 Secret Chamber
Moreover, he is not an ordinary Earthly Immortal, he must have at least one high ranking Earthly Immortal.
The higher the level of strength, the greater the success rate.
Xue Dao and Ning Cheng were both middle stage celestial immortal Rankers, if combined with Earthly Spirit Pill, they wouldn't be able to let the group of Immortality inside break through