In honor of Zhang's achievements in science and engineering, his friend Cui Ziyu (Cui Yuan) wrote a memorial inscription on his burial stele, that has been preserved within the Guwen yuan.[eight] Cui stated, "[Zhang Heng's] mathematical computations fatigued (the riddles of) the heavens along with the earth. His inventions were https://wm78998641.tusblogos.com/31687642/the-smart-trick-of-heng365-that-nobody-is-discussing