Ten years ago, 18-year-old Yuan Yueyue met 22-year-old Cheng Zhiyu, thinking that they would have a lifetime together.
Ten years later, 28-year-old Yuan Yueyue met 32-year-old Cheng Zhiyu, thinking that they were two lines that wanted to cross. After a brief encounter, sooner or later they would go further and further apart.
Later, Cheng Zhiyu spent his whole life telling his Yueyue that they would always be together.
