Xenforo 2.1.x [MMO] - Russian Language For Xenforo 2.1.10

Installation:
We go into the admin panel, from the side menu click on the "Appearance" tab.
In the menu that opens, select the "Languages" item.
On the page that opens, click on the "Import" button.
Select the XML file "language-Russian- (RU) -XF.xml" and import as "Child of language: (No Parent)".

Update:
We go into the admin panel, from the side menu click on the tab "Appearance"
On the left in the "Languages and Phrases" section, select "Languages".
On the page that opens, click on the "Import" button
Select the XML file "language-Russian- (RU) -XF.xml" and overwrite the existing language "Overwrite language: Russian (RU)".
Wishes, suggestions, typos, inaccuracies, untranslated moments - write about all this in the support topic, this is welcome.