Yu Shiji (虞世基) (died 618), courtesy name Maoshi (懋世 or 茂世), was an official of the Chinese dynasties Chen Dynasty and Sui Dynasty. He was particularly powerful during the reign of Emperor Yang of Sui and became prime minister, and was faulted by traditional historians for placating Emperor Yang and not reacting properly to agrarian rebellions. When Emperor Yang was killed in a coup led by the general Yuwen Huaji in 618, Yu was also killed.
Read more about Yu Shiji: During Chen Dynasty, During Emperor Wen's Reign, During Emperor Yang's Reign