Mistaken Marriage

He Yuanyuan, daughter of a royal merchant, accidentally marries into the Qin Duke's mansion after her wedding sedan chair collides with the Eldest Princess. She uncovers her fiancé Xiao Ruohuo's plot to climb the power ladder, severing their ties. Instead, she chooses to marry Qin Yan, the seemingly reckless but sincere heir, despite the mistake. As they grow closer, He Yuanyuan uses her wisdom to manage the household and establish a shelter for women, while Xiao Ruohuo's repeated attempts to interfere are thwarted by the couple. In the end, the Eldest Princess and He Yuanyuan clear up their misunderstanding, allowing He Yuanyuan and Qin Yan to build a fulfilling life together.