Conversation so far:
what did Zhang Heng have to do with science and technology?
Zhang Heng's mechanical inventions influenced later Chinese inventors.
what did it influence them to do?
Zhang's water-powered armillary sphere as the inspiration for his 11th-century clock tower.
what was his biggest accomplishment?
Based on the theories of his predecessors, Zhang Heng systematically developed the celestial sphere theory.

Question: how did the world react to this theory?
Self-contained rewrite: How did the world react to the celestial spere theory?