In honor of Zhang's achievements in science and technologies, his Mate Cui Ziyu (Cui Yuan) wrote a memorial inscription on his burial stele, which has been preserved in the Guwen yuan.[eight] Cui mentioned, "[Zhang Heng's] mathematical computations exhausted (the riddles of) the heavens and the earth. His inventions were similar https://heng36554208.blogscribble.com/31710700/considerations-to-know-about-heng365