Xu Ruodan, the legitimate daughter of Anguo Gong, died tragically in her previous life, and the clan was overthrown. Emperor Qian Jing was good at the art of imperial checks and balances, but he did not establish a crown prince for a long time, and the chaos in the court over the heir apparent became more intense. The eldest prince Zhang Bingrui and the third prince Zhang Bingxiang raided the people and formed cliques for personal gain, while the second prince Zhang Bingkun hid in hiding to plot. The three parties stirred up the government and the opposition, frequent disasters occurred in the world, and people were displaced.
The Wuluo Kingdom in the northwest secretly poisoned the royal families of Daqian and Liang, inciting civil strife between the two countries, with the intention of dominating the Central Plains. At that time, Xiao Yu, King of Liang Guoyu, was poisoned by a strange poison and was in danger.
Once reborn, Xu Ruodan returned to his childhood. The blood feud faded away her youthful innocence, and by chance she acquired the skills of medicine and poisoning, becoming unparalleled in resourcefulness. She opened a wide range of Jishitang to relieve the sufferings of the people, relied on water transportation to secretly accumulate power, dismantled the prince's conspiracy one by one, and made secret moves to weaken the reputation of the prince.
Xiao Yu, who was infected with the poison, went to Anguo Duke's Mansion to meet her again. The two met when they were young in Wolong Mountain. She fell into a trap and was rescued by Xiao Yu. After she had a high fever, she forgot the past. Facing Xu Ruodan, who didn't recognize him at all, Xiao Yu felt sad, but his youthful love had already been engraved in his heart.
Xu Ruodan and everyone in Yaowang Valley worked hard to remove the remaining poison from him. After Xiao Yu recovered, he used thunderous means to quell the civil strife in Liang and was granted the title of Crown Prince.
At the birthday banquet of Emperor Qianjing, Xiao Yu attended the banquet as the crown prince of Liang State and proposed to marry Xu Ruodan in front of envoys from various countries and the civil and military officials of the Manchu Dynasty.
The two of them worked together to control Wuluo and Beidi, used kindness and power to appease Cang Mian and Ying Yue, and calmed down the disputes among the countries in the four directions.
This cross-border marriage is not just to protect the territory of the two countries, but to check and balance the power struggles in the court, resist foreign troubles, heal the devastation of the world, protect the vast nine states, and compose a song of Wolu that originates from Wolong Mountain and stabilizes the world.