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Born in Shuaikou Village of Xiuning County, Cheng
Dawei ( 1533
~ 1606), Rusi by courtesy name and Binqu by poetic name, was
a famous grand master of ancient abacus. According to The
Cheng Genealogy, " Cheng Dawei mastered seal script and
was well versed in algorithm". When away from home on
business, he would go to consult anyone he heard of to be
an expert at calculating figures. And he would purchase a
classic at the cost. He epitomized all the great achievements
in abacus before the Ming Dynasty and wrote monumental work
General Survey of Algorithm, which has produced a lasting,
far-reaching and profound influence, unparalleled by any other
mathematical works, as The Brief History of China's Mathematics
puts it.
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