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In "The boundary between the two states was established along the Huai River, a river north of the Yangtze." I trust "a river north" would be better off replaced by "running north" (or something along those lines) to avoid repetition of "river", especially with the indefinite article - since it is already identified as the Huai River.
I would prefer summing up "Rise of Emperor Hailing" subsection since it is a part of an already sizable background section surpassing the topic of the article by far, and there already is an article on the emperor. It is no dealbreaker here, but I'd strongly suggest this course of action.
Too bad this is a featured article. The writing is fairly confusing. — Preceding unsigned comment added by 220.127.116.11 (talk) 00:35, 18 October 2014 (UTC)
I feel it is not currently in FA shape - but it has the potential to be strengthened into one without that much work - mostly, the sources need to be more scholarly.18.104.22.168 (talk) 21:55, 15 December 2016 (UTC)