How did conservative values restrict Islamic technology?

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

must repent and believe in god.

or the book

journey across time - chapter 10 "the rise of christianity"