The two of them walked through the tunnel, and soon, they had covered a short distance of six to seven meters. When they got close, they found that the tunnel had turned right here. They did not hesitate and continued to walk along the tunnel.
After turning the corner, the two of them advanced another ten meters. They stopped at the same time, their eyes revealing an extremely shocked expression.
In front of them, to be precise, there was a huge square under their feet. It was as big as two or three football fields. The tunnel stopped here. The square was about ten meters below the tunnel, as if the ground had caved in.
Besides, Xia ruofei also noticed that there were many dark tunnels on the opposite side of the mountain wall. There seemed to be many similar tunnels, all leading to this huge square.