"In life, we meet so rarely, like Shen and Shang, whose paths never cross." Shen lies in the west, while Xin lies in the east; they appear at different times and never meet. The stirrings of youth, felt almost without noticing, may become endless nights of heartache and longing. In the end, so many people have to choose different paths, moving through life as far apart as Shen and Shang.