Yin Xuanying had a long dream. In the dream, she lost all her relatives in a confused way. She didn't know why she couldn't make a friend, and finally ended her short life without reason. She didn't understand why she could lead a life that everyone admired like that.
After waking up from the dream, she still didn't quite understand, but she knew one thing very well: if she continued to be hazy, she would just repeat the dream again.
This is a way of survival for a not-so-clever, not-so-smart, and not-so-beautiful general girl to read the file again.