Find another one and break down the door. There is a door on the right in the middle of the second floor, and the room on the right is blocked by a fence. There is a rotating blade inside. As soon as I entered the door, there was a fire in one place. You can block the past with the rotating blade next to you, and then you will see the rotating blade on the second floor. Get this out and break the closed door. Finally, take these two to the middle of the second floor and pass the customs.