C1109 A Vengeful Spirit

When they reached the fourth level, everyone was dumbfounded.

Lau Yiheng and the others thought that the fourth level would be the same as the previous levels, and that there might be a type of more powerful Power. However, what was in front of them? The five of them were at a loss.

What they saw was a row of bookshelves. There were books in the bookshelves, but that was not the scariest part