Chinese Flame Clock (watch video).
A tall white candle is displayed in the center of an ornate box.
The candle can be removed and shown to be solid, then returned to the holder in the center of the box.
Three doors on the front are closed, then two large metal knives are pushed through the sides, dividing the candle into three parts.
The doors are opened, and the center of the candle has vanished!
A small door in the rear center of the box is opened giving a clear view right through it!
The doors are closed, the knives are removed, and the candle is displayed once again - it is completely unharmed!
Chinese Flame Clock (watch video)