describe: [Product]: Kongming Luban lock toy [Size]: as shown [Material]: Wood Weight: 0.3-0.45kg Introduction: Also known as the Eight-Picture Lock, a traditional Chinese intellectual toy, it is said that it was invented by Kong Ming during the Three Kingdoms period. Kong Ming lock is widely circulated among the people, it is beneficial to relax the body and mind, develop the brain, and flexible fingers. It is a leisure toy puzzle suitable for all ages The benefits of toys: 1. For students: it can cultivate concentration, increase patience, build confidence, and stimulate interest in learning; Apart from studying, you can not only relax your body and mind, but also fight for intelligence, courage, and time in the game, invisibly broaden your thinking and increase your wisdom. 2. Adults: involving geometry, topology, operations research, graph theory and other disciplines. In terms of mathematics, it helps to fully develop the right brain and improve the way of thinking. Adjust mentality, overcome impetuous psychology, improve perception, and reduce work pressure 3. For the elderly: it can not only promote blood circulation to the peripheral nerves, but also keep the fingers flexible; It can also promote the continuous flow of blood and amino acids to the brain, increasing the oxygen supply of the brain, So as to activate brain cells, delay brain aging and prevent dementia. Reduce the risk of dementia.