After Traveling Through Time and Becoming an Empress, the System Asked Me to Conquer the Regent.

Jiang Qinghui was hit by a truck and died, and then traveled through time to become the empress of the Southern Jin Kingdom with the same name as her. The system asked her to attack the regent, but the regent already had a sweetheart. In the end, the empress died on her wedding day, the regent was also killed by the system, and his sweetheart Shang Yunshi died for him.