I wonder if you are still worried about not finding free e-books? Whether it's textbooks for primary and secondary schools or universities, or comprehensive books for all kinds of reading materials, it can be solved once and for all today. From then on, I won't worry about finding e-books any more.

Recommended website: National Library Reference Union

http://book.ucdrs.superlib.net/

1. First of all, let's open its official website

2. After registering and logging in, you will see a search box in which you can enter the ISBN code, title and author of the book to search the book.

3. Click document delivery

4. Fill in the email and wait for it to come

5. After receiving the email, click read and you will jump to a web page. Click the PDF option at the top, then the download link will pop up, and you can download it.

Tip: this website can only consult 3-5 times a day, only 50 pages at a time.

Small white plate:

https://www.xiaobaipan.com/

Mainly search Baidu disk resources.

1. Search the small white boat directly in the search engine (or click our portal directly) after clicking in, the following screen will appear

2. Search for the book you need to find in the search bar (no need to log in)

3. Click on the network disk, and then enter the network disk. Just save and enter the network disk. (you can download it directly from Baidu's Internet disk)

National Digital Library:

http://www.nlc.gov.cn/index.htm

I don't think you need to do more introduction for the national brand. Go straight to the picture above!

参考资料：百度百科，知乎

翻译：Google翻译

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