An Men Hidden Door

A woodcut illustration of a "hidden door" or "secret gate" (An Men). The image depicts a rectangular structure resembling a large cabinet or a section of a wall with a double-door frame. Inside the frame are horizontal slats or louvers arranged in two columns. The structure sits on a raised stone or wooden base. To the bottom left of the base, there is a small rectangular block or step and two thin vertical lines, possibly representing a mechanism or a tool for operation. The entire illustration is enclosed within a simple black border.