At this moment, the white-haired old man waved his hand and released a burst of spirit energy, like a gush of sword Qi. A ripple appeared in the air and started to slowly undulate.
"Formation!" Ye Xiao watched on as a formation was hidden in the void. The strand of spiritual energy that the white-haired old man had released earlier seemed ordinary, but it was like a key that allowed the formation to open as well.
Accompanying the fluctuations of space, a violet vortex suddenly appeared in the middle of the air, slowly rotating. It was like a gate of the starry sky, emitting an incomparably mysterious aura.
Suddenly, a huge crack gradually started to appear behind the formation. People were shocked to see another world on the other side of that crack.
