Baidu library free download methods
Example:
1. To download the document url address:
https://wenku.baidu.com/view/a1c77749ec3a87c24128c493?fromShare=1
2. Add three v vvv behind baidu url addresses
http://wenku.baiduvvv.com/d/?url=http://wenku.baidu.com/view/a1c77749ec3a87c24128c493?fromShare=1
3. Choose a good format after entering a new page, click on OK to download