This is a star whose surface temperature is unknowably higher than the center of the sun. The surrounding temperature is soaring crazily. At the depth where Fang Jueyu and the others are currently located, even a King-level Transcender would be reduced to not even ashes in a minute.
As for the immense pressure at the center, it is enough to crush a Transcender to death, essentially making it a forbidden zone for any Martial Artist.
However, for Eno, this Diqi Star is just a slightly brighter star. In the former Root Universe, although stars like Diqi Star were rare, they were by no means uncommon.
Yet, common or not, whether it can be refined is another matter. Even in the Root Universe, no Martial Artist dared to refine such a star, and even when Eno broke through to become a Transcender, the star he refined was not of this level.
