A total conversion mod for the older Beta 1.8.1 version.
If you are looking for localized mods, there is a dedicated Russian Language Pack for this version. "Interesting Report" Context skachat mainkraft 181 s modom
Sites like CurseForge or Modrinth are the safest sources for modpacks. Popular 1.8.1 Modpacks: A total conversion mod for the older Beta 1
If you are referring to an "interesting report" regarding the 1.8.1 update, it likely relates to the and changelogs that defined this version: skachat mainkraft 181 s modom