C3807 Extreme Yin Force

At this moment!

Qin Feng and the others could clearly see the gray Yin Qi covering the entire tower, adding a mysterious and strange atmosphere to it.

It did not look like a strange-looking building, just like an ordinary tower in ancient times.

However!

Even so!

Qin Feng and the others stood in front of the gates of hell and watched. They could feel an inexplicable chill on their backs