As for the Immortal Pill, judging from its name, it was definitely of a high level. He could try it on Bai Ye. Well, he could just throw the wolf head in and keep the wolf body to eat.
As for stripping away the Great Dao, Han Fei wasn't too interested in it. He had already mastered a lot of Great Daos. However, he could use this method to help some strong masters of the human race quickly increase their strength.
There were quite a few Immortals here. There were nearly 200 people at the Carefree Level and the Dao Proving Level. If he could separate these people's Great Dao and give them to human Sky Openers to comprehend, wouldn't he be able to quickly build Dao Proving cultivators?
Although it might not be as simple as he thought, this matter was very promising. He might as well give it a try.
However, how could such a powerful Nature Spiritual Treasure fall into the hands of an Immortal-level?