An alley, a section of road, embraces the sorrow and joy of the years. No matter where they are, Xu An and Gao Ge will never forget the little things in the alleys of their hometown. Looking back on their old house, their common friends, their growing up years and their feelings are getting better and better in the alleys. There are thousands of streets in life, whether walking together or alone, it is all about growth and love.