In the 30th year of the reign of Emperor Jiayi of the Song Dynasty, Ji Kangcheng, the eldest son of the Emperor of the Song Dynasty, united with the enemy's Xiyue troops to attack the Song Dynasty. The Song Dynasty was defeated step by step.
Yunye is willing to send troops to help, but the condition is that Song Zhuanyuan, the princess of the Song Dynasty, marries Yunye's Prince Jin.
Song Chuanyuan is a down-and-out princess who is devoted to her country.
Su Ziyu is a frail prince who is seriously ill.
Rumor has it that he is in failing health.
Rumor has it that he only loves his cousin Yun Fangfei, Princess Xujue.
Rumor has it that his cousin is pregnant with his child, so he would not marry him unless his cousin married General He, who had been slated to marry the baby since he was a child.
He said to her: "You help me marry Fang Fei, and I will give you Li Shu and let you return to the Song Dynasty."
He said to her: "What I owe you in this life will be paid back in the next life."
She replied to him: "I don't know whether I can marry him or not, but I must return to Song Dynasty."
She replied to him: "If you betray me in this life, don't let me meet you in the next life. I'm afraid you won't succeed and betray me again."
Later
She returned to Song Dynasty, but he pursued her hard.
She wanted to get married again, but he blocked her in every possible way.
She said: "Su Ziyu, don't you want me to live well?"
He said: "No, I don't want to see you living well with others."