A piece of fish tofu, the sentence "Because you love me", and a ray of white light - Chen Huaian and Jiang Lu fell from a modern convenience store into the wilderness of the chaotic times of the late Sui Dynasty.
Naked, with nothing but each other.
They struggled to survive in this strange land, from the drafty woodshed to the smoke-filled village, from the dependence of two people on each other to the warmth and perfection of a family of three. After decades of ups and downs, they saved people and were saved by others; they lost close relatives, but also welcomed their daughter Nian'an; from the field ridges of Yushugang to the palace walls of Chang'an City, they went from unknown refugees to the most trusted husband and aunt of Prince Li Zhi.
When Jiang Lu became the most trusted female doctor in the Imperial Hospital, when Chen Huaian used modern wisdom to teach the young prince to distinguish right from wrong, when their daughters Nian'an and Li Zhi read side by side in the imperial garden and laughed about the past and present - they finally understood that no matter what era they were in, home is where there is love.
This is a long letter written to the years, about love, family affection and bonds. In the turbulent waves of history, they spent decades writing the most tender answers: traveling through thousands of years, just to meet you; after going through vicissitudes of life, fortunately we grow old together.