The Black and White Impermanence of the Demon Cultivation Institute!

The old man in black robe had a thin face, and his old eyes were bloodshot and filled with a strong breath of death.
The old man in white robe had sharp eyes and a ruddy face, but his stern expression was intimidating without him being angry.
There were also traces of black energy surging on the bodies of these two people, just like the black mist trailing behind the more than one hundred figures, all of which were demonic energy!
Obviously, they are all people who practice martial arts...