The first part is on the author cui xiding ( 崔 锡 鼎 ) . cui xiding ( 1645 - 1715 year ) ， another name was ruhe ， styled minggu ， posthumous name was wenzhen ， minister of suzong ( 肃 宗 ) of yi dynasty ， wrote jingshizhengyuntushuo ( 经世 正 韵 图说 ) and mingguji ( 明 谷 集 ) ， compiled zuoshijixuan ( 左 氏 辑 选 ) . this part briefs party conflict of the time of cui xiding ， digests the relevant records of cui xiding of factual records of yi dynasty ( 李 朝 实录 ) the second part summarize jiushulue " contents . jiushulue includes four parts ， firstly dividing part introduee the main contents ， and put great emphasis on to analyze some magic square by cui xiding himself created ， evaluate dividing of cui xiding so - called confueianists being good at algorithm and magieians being good at algorithm 这一部分简介了崔锡鼎所处时代的党争情况，摘录了《李朝实录》有关崔锡鼎的社会活动情况。第二部分概述了《九数略》的内容。 《九数略》共四篇，首先分篇介绍了主要内容，着重分析了崔锡鼎自创的一些纵横图，并评价了崔氏所谓“儒家明算法者”和“术士精算法者”的划分。
