Rosie met Ye Zhi in the early summer when she was fifteen. The two unrelated people met through a common friend. Rosie often said that it was thirty degrees in the Arctic Circle, but between him and me there was always only a cool temperature. In the following ten years, the relationship between the two changed, and in the end it failed to achieve the result Rossi wanted. Some people are destined to be friends only for the rest of their lives. If they step out of bounds, everything will be lost.