Seven years after the breakup, Xu Mingzhen returned to Linlan and was responsible for leaving the last "urban sound file" for Lutingli, which was about to be renovated.
She records the projector of the old cinema, the gears of the clock shop, the whistle of the ferry, and also records the sounds that will soon disappear with the old city.
At the first meeting of the project, she met a person who should not be there.
Zhou Xuheng, her ex-boyfriend of four years, is also the person in charge of this old city renovation project.
Seven years ago, she chose to go to Beijing and he chose to stay.
No one betrayed the other, they just stood at a crossroads in life, and neither one could take one more step towards the other.
Seven years later, she wonders what deserves to be left behind, and he must decide what has to be torn down.
From an old movie theater to a box of audio tapes that had been dusted for many years, they stood on opposite sides of each other again and again, and discovered again and again -
Some voices will disappear, and some regrets will never really pass.
Later Xu Mingzhen asked him: "If it happens again, will you let me go?"
Zhou Xuheng looked at her for a long time.
"Yes."
"But this time, I will tell you that I can't bear it."
Purpose: Real mature love is to leave a place for each other in each other's lives.