The site seems to be down, but it was successfully mirrored at archive.org: https://web.archive.org/web/20231209230622/https://lupyuen.codeberg.page/articles/p

The site seems to be down, but it was successfully mirrored at archive.org: https://web.archive.org/web/20231209230622/https://lupyuen.codeberg.page/articles/plic3.html https://web.archive.org/web/20231209230622/https://lupyuen.c... Edit: up and running again...