A few minutes later.
With the help of the Xuantian Extreme Demon Sword, the walls as hard as iron were slashed open by Xiong Wang as if they were made of paper, creating a massive passageway.
Especially when it came to the black barrier, he managed to carve out a huge space thirty cubic meters in size.
"Young Master, the sword!" Xiong Wang respectfully handed the Xuantian Extreme Demon Sword to Zhang Xiaohao.
"Hmm." Zhang Xiaohao responded calmly, took the sword, flipped his palm, and stored it away.
His gaze fell upon the black barrier before him.
The black barrier was enormous, over a thousand meters in size, forcefully supporting a large space underground.
As they got closer, a powerful pressure emanated from a thread of Nine Lotus Demon Fire inside, suppressing the surroundings.
