Xu Yi'an never thought that it was his hesitation that pushed Lin Yi away in the end. Maybe they understood too late that no one could be together forever. There was always something that separated them, either birth, old age, illness, or death, or lack of understanding. Later, he always remembered Xu Linyi's joyful promise but never had the chance again. In a strange country, I hope you will always smile and don't have to remember me.
Intention: We who met that summer when we were seventeen will miss each other in the future.