Intelligence developing tool based on hand function training

The invention discloses an intelligence developing tool based on hand function training. The tool looks from the outside like a big cuboid wooden box composed of a plurality of small cuboids (blocks for short). A plurality of decrypting mechanisms are arranged in the tool. Every two adjacent blocks are connected through a mortise and tenon joint structure. The blocks which are independent or freely combined and the corresponding decrypting mechanisms form a decrypting module. All the decrypting mechanisms are embedded in the surfaces of the blocks or block combination or inner cavities of allthe blocks or penetrate through the inner cavities of the block combination. The design concept derives from the Kong Ming locks, gear boxes and mortise and tenon building structures in ancient China.The Kong Ming locks, gear boxes and mortise and tenon building structures are combined, various different decrypting modules are arranged, and all the decrypting modules are integrated on a box body.The hand functions of a pa