Intellective Puzzle - Space Ball

play function : no nails rope, you can wood cross fastened together? 

2,000 years ago in the Ming invented a way to use a bite to three sets of vertical wooden strips intersects fixed, this occlusion is widely used in the construction, civil people Kongming this invention made ​​a toy - Ming locks original wooden structure outside the viewing cube cross match exactly, brains removable Xie put on is not so easy. Ming locks unlock to reproduce ancient wisdom, do not let the ancients left us lost in our generation in the hands of wealth. the 



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