Chinese seaport (8)
I believe the answer is:
shanghai
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">chinese seaport</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 shanghai that I've seen before include "Abduct; Chinese port" , "Trick (someone) into doing something" , "Large Chinese city" , "somewhere in China" , "many Chinese folk?" .)