The method is as follows: PubScholar public academic platform, SciDown.

1, PubScholar public academic platform: you can download the papers in this directory without logging in, and other papers need to jump to the original database for downloading.

2.SciDown: enter the article to be retrieved in the search bar, which supports title, author, DOI number, etc. On the search results page, click "CNDirectDownload". Click Retrieve Local in the new page. After jumping to SciDown, register your account. Go back to step 3 and click "Retrieve Local" again to complete the download.