User blog comment:Master Sima Yi/Assassinews 25-03-'13 — Assassin's Creed IV: Black Flag gameplay trailer/@comment-96.2.6.68-20130530081229/@comment-1888015-20130601233440

Aside from the fact that your post is rather confusing, I believe the game starts around the year 1715.

It is also to be released on November 1st.