In honor of Zhang's achievements in science and technology, his Mate Cui Ziyu (Cui Yuan) wrote a memorial inscription on his burial stele, which has been preserved during the Guwen yuan.[eight] Cui mentioned, "[Zhang Heng's] mathematical computations exhausted (the riddles of) the heavens and the earth. His inventions were being similar even to Tho
Odometer cart from the stone rubbing of an Jap Han dynasty tomb, c. 125 Ancient Chinese texts describe the mechanical carriage's features; just after a single li was traversed, a mechanically pushed picket figure struck a drum, and following 10 li had been coated, another wood determine struck a gong or simply a bell with its mechanically operate
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