O Mendigo que Era Imperador

The heroine and her sister threw the ball to attract marriage. The stepmother wanted to let her sister marry her son. Unexpectedly, the heroine took the ball first, but the sister's ball fell into the hands of the beggar with the baby. Jiang Sheng and others used a plan to exchange relatives. Unexpectedly, the beggar turned out to be the emperor who was looking for a benefactor, and the life-saving benefactor he was looking for was the heroine!