The one who counts the Ten Classics is awesome.

Zhou Kuai Su 'an Classic is the most powerful of the ten computational classics. Ten Books of Calculating Classics are ten representative mathematical classics in ancient China. These ten books are Zhou Pi-ai's Calculation Classics, Nine Chapters of Arithmetic, Calculation Classics of Island, Calculation Classics of Sun Tzu, Calculation Classics of Zhang Qiu, Calculation Classics of Cao Wu, Calculation Classics of Five Classics, Compilation of Ancient Calculation Classics, Record of Mathematical Techniques and Calculation Classics of Xiahou Yang. These ten arithmetic classics are rich in content, including the famous mathematical works from the early Han Dynasty to the late Tang Dynasty, and are indispensable documents for understanding ancient mathematics in China.