Step 1, click the "Expand" icon in the menu bar.

Step 2: Click here to open the Microsoft edge add-in.

Step 3: Enter scihub and press enter to search.

Step 4: Click here to "get"

Step 5, add and extend to the edge.

Wait a few seconds on the page and the installation will succeed! ! Just find a foreign language document on HowNet, then select all the numbers after DOI, and right-click on the numbers here. Click here to download PDF documents for free and realize the freedom of scientific research documents.