You must hit the box to open it. This is quite simple, but it is also quitefunny. At craft fairs, many people felt that Karakuri Boxes were difficultto open. Therefore, this was designed. For a long time, the craftsmancontinued making it in secret, because, other craftsmen in our group weretrying to create special works, too. This is a new specification. Thesurface painting is an “oil finish”.