Yu Jiaxi (1884-1955), the word Ji Yu, the name of the temple, academician of the Academia Sinica, linguist, bibliographer. Today's Dingcheng District Changmaoling townspeople. Father Songqing, the word Zizhi, in the second year of the Qing Dynasty Guangxu (1876) Jinshi, official in Shangqiu, Henan. Jiaxi was born in his father's office, and received court training since childhood. He was determined to write. At the age of fourteen, he wrote "The Chronology of Confucius's Disciples", and at the age of fifteen, he noted "Wu Yue Spring and Autumn". In the twenty-seventh year of Guangxu (1901), he was invited to the middle township examination. In 1927, he went to Beijing and taught Zhao's disciples at Zhao Erxun's house. At the same time, he reviewed the "Qing History Manus

Yu Jiaxi has learned from ancient and modern times, and his recommendations are equal to his body. His writing style is flexible and full of twists and turns. He has no diseases such as rigidity and redundancy. His style is similar to Li Ciming's. He is both a bibliographer and a historian. He once concluded that "History of the Song Dynasty trumps Confucianism in the Qing Dynasty." His works include "Introduction of Bibliography","General Rules of Ancient Books","Summary and Differentiation of Siku","Shi Shuo Xin Yu Jian Shu","Suoyin of Han Dynasty Yiwen Zhi" and "Yu Jiaxi's Miscellaneous Works on Learning". The academic community attaches great importance to the above works, especially the 800,000-word "Siku Summary and Differentiation", which took more than 50 years to be created. It has a sound at home and abroad and is known as "a masterpiece for studying my country's ancient books from a microscopic perspective."