This site is a temporary clone of the original dse.life
a better and more complete PassPaper collection [new ipfs://passpaper.unstoppable/ ] is coming.

We found that some other mirrors contain external links to commercial ebook store, tutor centre or even risky websites.
Therefore, we host this clean up and more update version with minimal operation cost, and keep it sustainable without any commercial involvement.

Simply said, it is always free to read and learn.