On a summer day when they were sixteen, Ping Yanzhao met An Heyun in the innocent days of adolescence. A few brief pages capture their awkward first meeting, but in the long years that follow, there is no one else in their story. From spending every day together to becoming inseparable, their ordinary days are filled with little acts of tenderness. The two boys walk side by side, making their companionship an everyday part of life.