This is a picture of artifacts found in China. Although it is unclear, these stones could have been remains from the Han Dynasty. There is not too much information about these stones, but some researchers suggest that this is some sort of medicine from this time period. Although it is farfetched, if all this is true, we can concluded that the Han dynasty was, in fact, a golden age. In addition, this could be a result of cultural diffusion, because all the knowledge of all the original kingdoms came together, to create an effective medicine.