Creative Color Six through Ming Lock Small round Ball Lu Ban Lock Topological Solution Mathematical Geometry Model Student Gift

		Kong Ming lock it is also called gossip lock, a traditional Chinese toy, which was invented by Kong Ming during the Three Kingdoms period. It is easy to remove and difficult to install, and it is more fun, kong minglock is widely spread among people, relaxing body and mind, active thinking and flexible fingers. It is a Casual toy suitable for all ages.