Zhang Cang, the prime minister in the early years of the Western Han Dynasty, was a calendar mathematician who was proficient in calendars. Geng Shouchang, an astronomer and financier, was a senior official in the reign of Emperor Gaozu Xuan Di, who was proficient in mathematics. Nine Chapters Arithmetic is one of the most important mathematical classics, which indicates that ancient mathematics in China has become a complete system and laid the foundation for the long-term development of mathematics in China.

The Significance of Nine Chapters of Arithmetic

Although the algorithms in "Nine Chapters Arithmetic" are abstract, the relationship between them is not obvious and messy. Liu Hui has greatly developed and deepened the concept of rate and the principle of homogeneity, which have been used for a long time in China's calculation, and regarded them as the subject of operation. Many problems can be summed up as today's solutions by finding out the various rate relationships between them and multiplying them by scattered ones, so as to gather them together, make them homogeneous and communicate with them.