On a snowy night at seventy, Chen Zheng closed his eyes with a lifetime of regrets. He had loved Zhen Weiwei for fifty years, and his dying question was met only by her silence as she gazed at the old scarf. Opening his eyes again, he returned to the summer of that year, resolutely tearing up the agreed-upon college choices and applying to the frozen thousand-li Hada University, determined to cut off this obsession that exhausted his entire life. When the first snow of Harbin fell, that girl who had chased three thousand li stood in the wind and snow, softly saying, Chen Zheng, the snow has fallen, let's love each other again.