There should be no area where you are stuck. Can you at least turn back from there? Maybe you missed another path. Or are you actually unable to move?

引用自 KiritoTRw：

Going down from the crystone, going upstairs and then I get stuck there. I can't move to any other new scene. What should I do now?

One of the carts on this level should be movable - just step behind it and hit enter, it will create passage to the next section.