C789 Eight Trigrams Celestial Locking Array

"There doesn't seem to be anything extraordinary about this building?" Ren Feng looked around and said.

Nangong Wuji did not explain. Instead, he mysteriously smiled and said, "Follow me and we will know."

As he spoke, he walked to the center of the room. The floor was covered with marble tiles, but a few of them were different in color from the others