My mother-in-law, who had worked hard for most of her life, only saw that she was "unmarried" in her household registration book when she was enrolling her grandson in school. She wanted to go back with her husband to get a certificate, but her son said she was pretentious, her daughter-in-law laughed at her for not being as "independent" as her mother, and even her husband thought she was noisy. Only then did she fully realize that she was just a free nanny in this family. Just when I was feeling chilling, the lottery ticket I bought casually in my pocket actually won five million.