In honor of Zhang's achievements in science and know-how, his Pal Cui Ziyu (Cui Yuan) wrote a memorial inscription on his burial stele, that has been preserved while in the Guwen yuan.[8] Cui said, "[Zhang Heng's] mathematical computations exhausted (the riddles of) the heavens as well as earth. His inventions https://edwinhouae.madmouseblog.com/12123420/the-smart-trick-of-heng365-that-nobody-is-discussing