@zdarkbrz_816 The "suspensin" seems to be intentional, as the Kanji(?) character in the last panel seems to be different from the previous one, and the punch line would makes more sense with that mistake.
wait but that's stupid..
If they all write in ancient language... then can't they all read what the others are writing?! in which case, doesn't this render the whole reason to write in ancient language moot in the first place?