These puzzle games exercise your logical and creative thinking. 3D wooden puzzle toys originated in ancient China and are called Kongming Lock. Wooden games for developing brains are more fun when you crack and assemble. Suitable for children, teenagers and adults, different design styles, with different fun. These wooden puzzles are made up of small pieces that you need to disassemble and reassemble in a very precise order to recreate the shape and challenge the puzzle. Kongming lock is good for relaxing body and mind, developing brain and flexible fingers. It is a leisure toy suitable for all ages. Kongming lock looks simple, in fact, the inner secret is infinite, not to the point, it is difficult to complete the puzzle.