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Gr 3–6—In scenes that recall two-dimensional forms of the ancient art of shadow puppet, this book introduces Zhang Heng, who was goaded by envious courtiers to create the first machine to tell when and where an earthquake had struck in China. The young inventor had always enjoyed creating devices for all sorts of purposes, and came to the attention of the emperor, who invited him to come and live in the palac...Log In or Sign Up to Read More