In honor of Zhang's achievements in science and technological innovation, his Buddy Cui Ziyu (Cui Yuan) wrote a memorial inscription on his burial stele, that has been preserved inside the Guwen yuan.[eight] Cui stated, "[Zhang Heng's] mathematical computations fatigued (the riddles of) the heavens as well as the earth. His https://heng36587542.ttblogs.com/11235422/the-heng365-diaries