The modern elite Su Yaoyao passed through the book and became the legitimate daughter of Yongning Hou. She suffered many injustices in the past, but now she is independent and self-reliant. She relied on her wisdom to protect the rich dowry left by herself and her mother. She treats people openly, resolves conflicts in the house with virtue, and makes friends who are gentle and reliable. However, Xiao Chenyuan, the cold prince who devoted himself to self-cultivation and his family and country, was attracted by Su Yaoyao's clear and courageous temperament. Later, the two supported each other and worked together to investigate the undercurrents in the court, eliminate traitors, and protect the peace of the people. Xiao Chenyuan put aside his obsession and ran in both directions with Su Yaoyao, accompanying each other with one heart and one mind, and guarding the mountains and rivers of the prosperous age together.