Liu Hui (about 225-295), a native of Zouping, Binzhou, Shandong Province, was a great mathematician in Wei and Jin Dynasties and one of the founders of China's classical mathematical theory. He is a very great mathematician in the history of Chinese mathematics. His representative works "Nine Arithmetic Notes" and "Arithmetic on the Island" are China's most precious mathematical heritage.

Liu Hui has quick thinking and flexible methods. He advocates reasoning and intuition. He was the first person in China who explicitly advocated using logical reasoning to demonstrate mathematical propositions.

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Liu Hui's masterpiece "Notes on Nine Chapters Arithmetic" is an annotation to the book "Nine Chapters Arithmetic". Nine Chapters Arithmetic is one of the oldest mathematical monographs in China, which was written in the Western Han Dynasty. The completion of this book has gone through a historical process. Some of the mathematical problems collected in the book were handed down in the pre-Qin period, and were edited by many people for a long time, and finally sorted out by mathematicians in the Western Han Dynasty. The content of the final version circulated today was formed before the Eastern Han Dynasty.

Nine Chapters Arithmetic is China's most important classic mathematical work. Its completion laid the foundation for the development of ancient mathematics in China and played an extremely important role in the history of Chinese mathematics. In this issue, 246 application problems and solutions to various problems are collected in nine chapters, namely, Tian Fang, Xiaomi, Descent, Shaoguang, Working, Average Loss, Insufficient Income, Equation and Pythagorean.

Reference source: Baidu Encyclopedia-Liu Hui