"That Day of the Year"

Li Xue is a girl from China who came to the United States with a pretentious attitude. But before she left, her grandma gave her a notebook... But she didn't know that this notebook would bring her a secret that had been sealed for many years! She met two men in the United States, and he felt how similar they were! She discovers and solves the mystery step by step. But she got caught up in an incident that troubled her. Is it him or not?