In a small town in northern Shaanxi in the 1980s, young Li Yuan meets high school senior Liu Yan at a May Fourth Youth Day event. A university graduate who has returned to his hometown, Li Yuan experiences the pain of state-owned enterprises collapsing amid institutional reforms, while Liu Yan earns outstanding grades and gets into the provincial University of Electronic Science and Technology. Amid the scent of jujubes on the Loess Plateau and the caves carved into its hillsides, a tender young love blossoms between them. But the tides of the times keep shifting: Liu Yan goes to study in the United States, while Li Yuan is framed and sent to prison as he tries to start a business. Five years of wrongful imprisonment sever their bond. Years later, Liu Yan fights to clear his name, and the two reunite: Li Yuan is free, but weathered by life. The jujube trees of northern Shaanxi bear witness to half a lifetime of youthful passion and the vicissitudes of fate: vows beneath a cave-dwelling swing, struggles to build a business in the provincial capital, farewell letters from behind bars, and years spent longing for each other in foreign lands. In the end, their story leaves a deep, unforgettable regret in the folds of history. With delicate prose, the novel traces the wandering and perseverance of ordinary people amid the sweeping tide of reform. It portrays how innocent love can be shattered and reborn beneath the weight of reality, like a stirring folk song echoing across the Loess Plateau.