In an unknown grotto-heaven, there were seven or eight Grotto-Heaven Masters and countless unknown Grotto-Heaven realm experts.
There were a total of 36 famous grotto-heavens in the world, but it didn't mean that there were only 36 grotto-heavens.
For Grotto-Heaven realm experts, when their cultivation reached a certain realm, they could open a grotto-heaven. But only when they reached the Grotto-Heaven Master realm could their grotto-heaven have a complete ecology.
This was why Grotto-Heaven Masters were so much stronger than ordinary Grotto-Heaven realm experts.
No matter what, there were always some hidden experts whose true strength was unknown to outsiders.
Now, this unknown grotto-heaven was the grotto-heaven of a mysterious Grotto-Heaven Master.
To Grotto-Heaven Masters, grotto-heavens were undoubtedly the most secret place.
These people were gathered here, and their gazes all landed on a figure covered in a black robe.