佛祖統紀 39.133

39.133

十四年。上幸國子監觀釋奠。命祭酒孔頴達（孔子之後）講孝經。大徵名儒為學官。學生能明一經者皆得補授。增築學舍千二百間。學生至三千二百六十員。自屯營飛騎亦給博士使授以經。於是四方學者高麗吐蕃皆遣子弟入學。升講筵者八千人。上以師說多門命孔頴達撰定五經疏。令學者習焉。

In the fourteenth year, the Emperor visited the Imperial College to observe the shidian sacrifice. He commanded the Libationer Kong Yingda (a descendant of Confucius) to lecture on the Classic of Filial Piety. He widely summoned celebrated scholars to serve as academic officials. Students who could comprehend one classic were all given appointments. One thousand two hundred schoolrooms were added, and the students reached three thousand two hundred and sixty persons. Even for the garrison encampments and the swift cavalry, erudites were appointed to instruct them in the classics. Thereupon, scholars from the four quarters, including Koguryŏ and Tibet, all sent their sons to enter the school; eight thousand people ascended to the lecture hall. Because teachers' interpretations were varied and numerous, the Emperor ordered Kong Yingda to compile and establish the Commentary on the Five Classics, commanding the students to study it.