An An's favorite number is 17. When An An was 17 years old, she was not called An An, but Xiao Qi, at least at night. At the age of seventeen, some people may be confused, hesitant or happy. In this most cholera period of life, some people use this period to become the best version of themselves, while others sink into decadence. From then on, each other's dreams have nothing to do with each other.