Many years ago, the Qin Dynasty fell, and people said that Prince Qin Ying was killed by Xiang Jui. In fact, it was not the case. In order to preserve their bloodline, the Ying clan made a contract with a mysterious man. Ziying and his clan members fled to a small country in the south, called the Kingdom of Qiancheng. They made an agreement with the king that if the Kingdom of Qiancheng was in trouble in the future, the legitimate son of the clan would go to the battlefield to help, but he asked for a place to stay, and the king promised it. For the next hundred years, they were isolated from the rest of the world.