Chapter 6115: Chapter 375 Balancing War Development and Propaganda

The Black Fiend Legion's secret mine was bombarded by spirit stone rockets from the Immortal City, wiping out all the Black Fiend cultivators hiding in the mine.

It is currently unclear whether this mine is a branch of the Black Fiend Legion, but it is certainly a very important location.

There must have been quite a few Black Fiend cultivators who lived and practiced in the mine, but now they have all been wiped out by the Spirit Stone Rocket.