Thirty-six years, Qianlong Jinshi, forty years, Qianlong recruited the "Sikuquanshu". In forty-four, Gan Long became the deputy examiner of Guizhou Provincial Examination. The four libraries were scattered, edited and filled with Wen Yuan Pavilion. Qianlong begged for illness in fifty-six years and died in autumn and July at the age of sixty-two. Zhou Yongnian was a famous bibliophile in China18th century. He said that his books are "better than mountains" and he is also a famous scholar. He has made outstanding achievements in collation, bibliography and library science, especially in the compilation and revision of Sikuquanshu. When he was young, Zhou Yongnian was full of readers all over the world, and he was a book collection career that benefited generations. He is brewing a historic event-advocating "Confucianism and Tibetan Studies" to preserve books from all over the world, and building a "borrowing garden" to make a family's books widely known to the world. Confucianism and Tibetan theory originated in Cao Xuequan in the late Ming Dynasty. Zhou Yongnian raised it to the theoretical level and expounded it, and made a theory of Confucianism and Tibet, making clear its meaning. In the three articles of the Confucian-Tibetan Treaty, he formulated thoughtful implementation rules to facilitate implementation. In order to build Confucianism and Tibet, he shouted loudly and set up a "borrowing garden" by himself. The borrowing garden is Zhou Yongnian's library and his self-practice of Confucianism and Tibetan studies. It has two functions of modern library-preserving documents and spreading civilization, and it is the origin of modern public library. Unfortunately, this is just Zhou Yongnian's naive dream. At that time, the manuscript of Song Yunyuan by bibliophiles was often hidden in a secret, and Zhou Yongnian could not fulfill the ideal of Confucianism and Tibet. However, as soon as Confucianism and Tibetan were mentioned, scholars responded. In Confucianism and Tibetan, Zhou Yongnian advocated the compilation idea and the principle of choice of Sikuquanshu. Therefore, it is also reasonable for some people to say that the compilation of Sikuquanshu "Advocacy belongs to Zhu Yongnian". Zhou Yongnian not only advocated the compilation of Si Ku Quan Shu, but also made great contributions to it.

After 40 years of Qianlong, Zhou Yongnian was recommended by Liu Tongxun, a great scholar, and was recruited as an editor, specially changing Jishi Shu, imperial academy. At that time, academic circles were proud of it, and domestic scholars made friends enthusiastically. Siku Library was founded in the thirty-eighth year of Qianlong, and the compilation of Siku Quanshu began with the compilation of Yongle Dadian. Zhou Yongnian devoted a lot of efforts to this matter and made outstanding contributions. According to Zhang Xuecheng's "Biography of Zhou Shuchang", the library officials refused to ask for hardships and chose those who made meritorious deeds, so they said that there was no book to compile. However, due to Zhou Yongnian's insistence that there is still a lot of work to be done, his helpless colleagues have to "do their best to make the book prosperous". Zhou Yongnian is not afraid of hardship. "There are 9,000 books in my eyes, and there are 18,000 left." In addition, the defects were repaired and corrected according to Yongle Dadian. In the largest and most fruitful collating activity in the history of China, Zhou Yongnian ignored fame and fortune, just "wanted to do what he saw on weekdays and show his legacy". His spirit of obscurity, hard work and the legacy of Song and Yuan Dynasties will go down in history forever!

Li Ciming thinks that although Ji Yun and Lu wrote The General Catalogue of Sikuquanshu, Dai Zhen wrote A Brief Introduction, Shao wrote A Brief Introduction, and Zhou Yongnian wrote A Summary of Divisions. This division of labor is based on their academic expertise. The evaluation of Zhou Yongnian in the Draft of Qing History is: "The four schools of military, agricultural and natural arithmetic are all valued by the library." Gui Fu also said in "Biography of Mr. Zhou": "Mr. Zhou outlined the words of Baishi and did not make chapters according to its meaning." All the lost books compiled by the ceremony will be summarized by whoever compiles them. It can also be known from the investigation of the collection of treasures in Wuying Hall that the abstracts of Pengcheng Collection and Fuxi Collection were also written by Zhou Yongnian. In addition, according to Mr. Chen Yuan's textual research, there are 13 in the records of Buddhism in the Summary of Siku, and there are few mistakes in 12, which was also compiled by Zhou Yongnian, because Zhou Yongnian was obsessed with the Inner Temple since childhood and was quite proficient in Buddhist works.

Zhou Yongnian is a master of Confucianism, and his articles are the best in the world. However, his vision is too high, and he is too modest. He claimed to be clumsy and didn't keep the manuscript. So there are few writings today, which makes many people today not know that he has done so much work in the process of compiling Sikuquanshu. This is a very regrettable thing. The ancients paid attention to reality and did not seek false reputation, which also gave a warning to today's society where academic experts are flying all over the sky and academic monographs are flooding.