"THE BOOK IS IN THE ROCKY WALL!" They exclaimed in unison and scrambled for the wall ahead.
"There could be a lever or a movable rock or something," he said and started running his hands on the rocky wall, trying to feel something. She did the same, and they moved in opposite directions. They continued wandering around thinking of how and where to see the book.
"I wonder if we should've broken the rocks instead of finding some kind of trigger," Zhang Xiu suggested.
"If we did that, we would have to keep breaking until we find the book. Not just that, we could cause damage to this facility or worse, bury ourselves in here. So let's keep it as it is. Not everything needs force." Wang Chen refuted this.