1 Zhouyi Suan Jing written by the Western Han Dynasty; 2 "Nine Chapters of Arithmetic", written in the Eastern Han Dynasty; Sun Tzu's calculation, Xiahou Yang's calculation and Zhang Qiu's calculation appeared in the Northern and Southern Dynasties. Zu Chongzhi's Composition in Southern Dynasties: Historical Records written by Liu Zhuo in Sui Dynasty; ⑤ Ji Gu Shu Jing written by Wang Xiaotong in Tang Dynasty; 6. Arithmetic calculation in Jia Xian's Nine Chapters of the Yellow Emperor in the Northern Song Dynasty: 7. Measuring the Round Sea Mirror written by Ye Li in the Golden Age; 8 "Several Books and Nine Chapters" written by Qin in Southern Song Dynasty; Zhu Shijie wrote "Meet with Siyuan" in Yuan Dynasty; 10 Xu Guangqi in Ming Dynasty wrote "Measuring Similarities and Differences and Pythagorean Meaning"; 1 1 Comparison of Nine Chapters Algorithms by Jason Wu in Ming Dynasty; 12 During the Qing Dynasty, Li wrote Gu Ze Xi Zhai Algorithm and Fiona Fang Interpretation ... Anyway, the academic achievements of ancient algebra in China were very high.