This is a square and bite-style wooden optical glasses. The three groups of wooden strips are vertically intersected and fixed in a snapping way. The outside looks like a cross-cube that fits neatly, it can be disassembled with a brain, and it is not so easy to install. This structure comes from one of the most traditional carpenter crafts in China, called Kongming Lock,let the beautiful classical culture reappear in front of the world.

This wooden optical glasses unlocks the Kongming lock to reproduce the ancient wisdom, and don't let the wealth left by the ancients to us be lost in the hands of our generation. According to legend, the Kongming lock was invented by Zhuge Kongming during the Three Kingdoms period based on the principles of the Eight Trigrams metaphysics, and it was widely circulated among the people. Kong Mingsuo looks simple, but in fact, it is infinite in mystery, and it is difficult to complete the assembly.

The front frame uses black gold wood from Bolivia, and the temples are highly elastic beta titanium, no oppressive to wear. The material of black gold wood is tough and the wood grain is fine and uniform. The texture is black and striped, which spreads out naturally, and is not easy to crack and be corroded by fungi. It is one of the common materials for making wooden glasses.