User blog comment:Master Sima Yi/Assassinews 03-03-'13 — Assassin's Creed IV: Black Flag trailer and screenshots/@comment-5019018-20130325204419/@comment-3046679-20130326142311

Yeah, and the fact all of his other tracks in ACR, except the one during First Disaster cutscene, was just the main theme chopped up into various pieces and arranged a wee bit differently, but not different enough to not be recognizable as being a part of the main theme.