Besides their expressionless faces, the Yin Qi they exuded could also hide inside cultivators with the help of special elixirs, making them undetectable even through the Spirit Wood Technique used by Qi-refining cultivators.
Lin Yi's face became grave. He didn't believe that the Xuan Yin Sect cultivators simply wanted another helper by merging the Evil Spirits with a cultivator's body. Instead, they probably had a deeper purpose, which was to target their fellow sect members.
The secret realm was extremely dangerous and was full of random locations. Therefore, only a small number of cultivators would eventually reach the Alchemy Room or Cave Mansion.
The Xuan Yin Sect only had three such Evil Spirits, so they were definitely reserved for critical moments. They intended to use the bodies of possessed cultivators to attack their fellow sect members and reduce the competition.
This was indeed the work of the Evil Cultivation Sect. There was no end to their nefarious methods.
