What's the use of Sikuquanshu? Urgent!

Sikuquanshu has preserved a large number of documents of China in past dynasties. Many original versions are precious and rare, such as Song and Yuan dynasty block prints or old manuscripts; There are also many books that have been lost for a long time, which were rediscovered in the process of book revision; And there are also some books compiled from ancient books, such as 385 books compiled by Yongle Dadian. The compilation of Sikuquanshu has a great influence on the later academic circles, both in the method of arranging ancient books and in the aspects of compilation, collation and bibliography. But after all, Sikuquanshu is the product of emperor Qianlong's policy of cultural autocracy in the name of "commenting on ancient texts". Taking the opportunity of compiling Sikuquanshu, Qianlong collected books from the whole country and implemented the policy of "no collection". He destroyed and tampered with a large number of books that were not conducive to the rule of the Qing Dynasty. Sikuquanshu highlights Confucian documents and documents that reflect the "literary ambition and martial arts" of Qing rulers, and puts Confucian works in a prominent position. Put Confucian classics at the head of the four books, and general Confucian works at the head of the sub-department; He despised scientific and technological works and thought that modern western science and technology was "the most heretical", so he could "learn from it and prohibit the spread of its learning". Except for a few scientific and technological works collected by farmers, doctors and astronomical algorithms, general scientific and technological works are not included; It does not include literature with democratic colors or dare to criticize Confucianism, nor does it include dramas and popular novels such as Song and Yuan dramas, storytelling novels and legends of the Ming Dynasty.