Connate Spirit Wood.

"A Connate Spirit Wood? Spirit Core? What are those?" King of Elixirs heard Chen Fan's murmur and was confused.

The so-called Connate Spirit Trees were trees that lived for over ten thousand years. After they had passed their Thunder Tribulation, they could shed their mortal coil and exist in the world as a Connate Spirit, or sometimes it even took up a human form and possessed many unimaginable Immortal Enlightenment abilities.

Chen Fan waved a hand as he explained.

The Spirit Core was buried under countless herbs, however, it rose into the air as if it was snatched up by an invisible hand. As it slowly made its way toward Chen Fan, King of Elixirs could finally see what had sent Chen Fan into elation.

The so-called Spirit Core looked like a dark charred wooden chunk. However, the surface of the wooden chunk was smooth like rocks on the river bank, making it look like a wooden egg.