The moment he stepped into the Dark grotto-heaven, Mu Xuan's divine sense popped out. After confirming that there was no ambush, he began to observe the situation of the entire Dark grotto-heaven.
This was a super-large mystic realm world. Mu Xuan could tell this through the boundary between the sky and the ground. The case guessed that the area of the entire Dark grotto-heaven had reached at least ten thousand square kilometers!
It was almost equivalent to a prefecture-level city!
Moreover, Mu Xuan could sense that the spirit qi concentration in this Dark grotto-heaven was very high, at least 2.7 times that of the outside world!
"It's indeed a good place!" Mu Xuan sighed. It was simply a waste for such a place to be occupied by the Dark Alliance!
