User blog comment:Master Sima Yi/Assassinews 05-08-'14 – Assassin's Creed: Rogue announced/@comment-173.189.47.87-20141019002746/@comment-5019018-20141019130256

I'm thinking about age. Ah Tabai was already quite old when Edward left the Caribbean, so he must have been older even than that when he trained Achilles.