“Li” likely stands for or is a fragment of a torrent filename (e.g., “Material Library”). It’s a symptom of people looking for quick downloads without knowing safe alternatives.
If you use V-Ray or Corona , they come with their own high-quality libraries that can be installed for offline use by running the mtllib.exe found in your program files. Top 5 Legal & Free Alternatives Torrent Download 3ds Max Material Li
Here is the article I can write for you: “Li” likely stands for or is a fragment