Su Ning doesn't know how to describe her youth. Maybe it was like a green lemon, sour and astringent. If she hadn't repeated a year, what kind of life would Su Ning have had? In a single phrase: "A green-lemon-flavored senior year, repeated."
Those broken memories, that story, have all been reset to zero. No one cares anymore.
After reading it again and again, she has to admit that youth is a difficult book to understand. Eighteen was Su Ning's best age, but at nineteen she encountered many unhappy things.
