Xie Cheng met the boy for the first time on a snowy morning. He didn't know that that day was the beginning of the story, but maybe the story might have started earlier.
In the process of getting along with the boy, Xie Cheng inadvertently solved the knot that had been in his heart for many years. However, as the boy grew older, his love became increasingly complicated, so they separated after a struggle. Later, "by chance", Xie Cheng saw the diary left by the boy, and he learned the details and unknown truth that he had ignored for so many years.
Intention: The change that occurs in a person because of the environment and the people around him.