How did The Collection of Song and Yao Hui come into being?

In the 14th year of Jiaqing in Qing Dynasty (1809), Vae worked in Quantang Cultural Museum. Taking advantage of his position, he endorsed Quantang culture as the emblem and handed it over to the scribe for copying. Therefore, photocopied manuscripts often have the word "Quantang culture" on their heads or hearts. At this time, "Yongle Dadian" has been incomplete 2000 volumes. Since then, Vae has revised and arranged the manuscript. Because of the large space and many problems, I died before I finished it. During the 13th-15th year of Guangxu reign in Qing Dynasty (1887 ~ 1889), Guangya Bookstore founded by Zhang Zhidong entrusted Miao and Tu Youyou to sort it out, and * * * recorded 1 10 volumes, which was called "Guangya manuscript". 19 15, the manuscript belongs to Jiayetang, which was compiled by Liu Fuzeng and others and is commonly known as Song Yaohui in Qing Dynasty. In the process of sorting out, Liu deleted, merged and lost the original manuscript. In 193 1 ~ 1936, Ye, a member of Beiping Library Committee, found that there were many problems in the classification of Qingben, such as missing publication, revising manuscripts, misquoting other books, and ignoring the original books. Under the auspices of the editorial board headed by Chen Yuan, the lost manuscripts found in Qing Ben were supplemented and photocopied by Shanghai Dadong Bookstore.