司馬越
Chu Suanzi's father Chu Pou (褚裒) was a mid-level official during the reign of Emperor Kang's brother Emperor Cheng, successively on the staffs of Sima Yang (司馬羕) the Prince of Xiyang and then of Sima Yue the Prince of Wu—the future Emperor Kang. He was respected for the appropriateness of his speech. As Chu Suanzi herself grew, she was known for her intelligence and foresight, and she was married to Sima Yue, who had then become the Prince of Langye, as his princess. When Emperor Cheng chose to pass the throne to his brother rather than his sons at his death in 342, Sima Yue became emperor, and he created her empress in early 343, when he was 21 and she was 18. That year, she also bore him his only son, Sima Dan. He died just one year later, however, and her infant son Sima Dan, whom he created crown prince just before his death, became emperor (as Emperor Mu).