It is generally believed that it has gradually become the final version after several generations of supplement and modification. Zhang Cang and Geng Shouchang in the Western Han Dynasty had been supplemented and sorted out, and they were generally finalized at that time. The last book was in the early years of the Eastern Han Dynasty at the latest, and most of them were Notes to Nine Chapters written by Wei Yuan, Jing Yuan and Liu Hui in the Three Kingdoms Period (263).
The main characteristics of nine chapters arithmetic.
"Nine Chapters Arithmetic" defines the framework of ancient mathematics in China, which is characterized by focusing on calculation, closely linking with practice and aiming at solving mathematical problems in people's production and life. Its influence is so profound that China's mathematical works will generally take two forms in the future: either taking notes for it or writing books in its style.
Even after the introduction of western calculus into China, people often put mathematical knowledge including western calculus in the framework of nine chapters when writing books. However, Nine Chapters Arithmetic also has its shortcomings that can not be ignored: there is no definition of any mathematical concept, and no derivation and proof are given. In the fourth year of Wei Jingyuan (263), Liu Hui made comments on Nine Chapters Arithmetic, which greatly made up for this defect.
Refer to the above? Baidu Encyclopedia-Nine Chapters Arithmetic