This story really made me appreciate Last emperor of Han dynasty a lot. I always have thought of him as incompetent person. But now after watching the series I realized that he Could have easily decided to go against Cao family and landed to Kingdom into war directly but he didn't. I never get it even after abdication he was given best thing to live on later upon his death was given funeral befitting emperor with Wei emperor present there. He must have done something incredible in eyes of usurpers and people that he was honored as emperor even after his death. Now I look back at it than I realize it he could have made capital fall into chaos too.
As for Sima Yi he was not allowed to show his talent through out reign of Cao cao to Cao pi. But still manage to take throne for his family and established a new dynasty. He must have been a genius for doing so. It was intresting to see three kingdoms from his eyes.