Su Xing did not choose to break it with brute force, but instead used his understanding of the Dao of Arrays, spending a bit of effort to temporarily open a passage.
With a thought, Su Xing entered the relic of Wan Mu Sect.
Passing through the array, Su Xing clearly felt himself entering a space that was not of this location.
"Hiss, it seems that in the past, Wan Mu Sect also had predecessors who understood the Dao of Space... This space still seems to be within the Immortal Martial Era Instance, but it's definitely not inside the mountain we were just in..."
A glint of astonishment flashed in Su Xing's eyes. Even integrating the Dao of Space into the Dao of Arrays was extremely difficult.
Su Xing estimated that this relic might have existed long ago, probably created by some Tribulation Crossing or even Dispersed Immortal-level predecessor cultivator tens of thousands of years ago.