A box (made of wood) in which things can be put. Isn't it that simple to open it?

It should be called the mechanism puzzle box, which has different names according to the number of puzzle pieces. 998 1 map is called 999 puzzle box, and so on. There are such boxes in episodes 5, 6 and 7 of the TV series "Looking at Flowers in the Fog".

I sent you the photos.