Emperor Ai
In Sima Yi's youth, he went through a progression of official ranks. While he was still the Prince of Donghai, he married Yu Bing's daughter Yu Daolian as his princess. In 361, after the death of his cousin Emperor Mu (Emperor Kang's son), his older brother Sima Pi took the throne as Emperor Ai, and he took over the greater title of Prince of Langya, which Emperor Ai had previously held. In 365, after Emperor Ai died without a son, Sima Yi took the throne by decree of his aunt Empress Dowager Chu (Emperor Kang's wife). He created his wife Princess Yu empress.