Link shared folder in SVN

Found this article, and followed it's instruction. Very straight forward.
TortoiseSVN and Subversion Cookbook, Part 4: Sharing Common Code
https://www.simple-talk.com/dotnet/.net-framework/tortoisesvn-and-subversion-cookbook-part-4-sharing-common-code/

What I did is just these steps (assuming both folder1 and folder2 want to have a subfolder: sharedlib):

1. Open repo-browser
2. Drag and drop shared folder into a root folder (folder name sharedlib, level same as folder 1 and folder 2)
3. Right click on folder 1,Show Properties > New > External > New, local path: sharedlib, URL: ../sharedlib
4. Do the same thing for folder 2

Now both folder 1 and folder 2 have sharedlib.