Eastern language (7)
I believe the answer is:
chinese
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">eastern language</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for chinese that I've seen before include "in Eastern country" , "Since he is from a very populated nation" , "Member of Han people" , "Since he, strangely, is this nationality" , "Boxes within boxes" .)