Who Really Owes Whom?

This is the story of Liu Jin, who met a girl named Chen Fenfen while working in Jinwei. The year Liu Jin was twenty, she was the same age as him. He lived east of the Taihang Mountains, and she lived west of them. Fate brought them together, and fate separated them. Liu Jin had known Chen Fenfen for less than two months when she went back to his hometown with him. They were together for two or three years, until she returned to her own hometown. Liu Jin went there looking for her, but he never saw her in person. More than twenty years have passed, and to this day Liu Jin still hasn't found the answer he wants. Owe nothing in this life, meet not again in the next. If we meet again in the next life, then we must owe each other a debt.