Seven years ago, a sudden change caused Su Wan's world to collapse, and Lu Chengyu's "let go" became the last straw that broke her back. For seven years, she closed her heart and devoted all her energy to architectural design, wrapping the softness of her heart with the hardness of steel and concrete. He carried guilt and acted decisively in the mall, but he never married and silently guarded everything about her. When the two reunited due to an urban renewal project, the pain of the past and the unquenched love gradually became clear through repeated confrontations and approaches. Through Lu Chengyu's affection, Su Wan learned to take off his disguise and face his inner desires; through Su Wan's tenacity, Lu Chengyu mustered up the courage to resist the constraints of his family and face his mistakes. From campus to city, from misunderstanding to honesty, from retreat to rushing, they grow up in the tempering of time and find salvation in each other's eyes. It turns out that the best love is not to never get hurt, but to still be willing to regain courage for the other person after going through thousands of sails, letting the evening breeze blow away regrets, and letting love warm the rest of your life.