Li Chunfeng, the Genius of Numerology

Li Chunfeng was intelligent and well-read since he was a child. He studied astronomy, calendar and arithmetic intensively at a young age and was extremely talented. When a young man entered the officialdom, he dared to point out omissions in old history. He was appreciated by Emperor Taizong of the Tang Dynasty and entered the Taishi Bureau to devote himself to his studies. In his middle age, he reformed the armillary sphere, compiled the "Linder Calendar", edited and annotated the "Ten Books of Calculation", created wind classification, and made epoch-making achievements in astronomy, calendar, mathematics, and meteorology. He was cautious as an official, did not admire power, was based on actual measurements, and was rigorous in his scholarship. He won the trust of three generations of emperors. In his later years, he remained indifferent and self-sufficient, sorting out classics and passing on academic knowledge. With profound achievements and upright character, he can be called a great master in the history of ancient Chinese science and technology.