My sister and I unlocked the selection system. The system asked 1 billion or biological mother, which one do you choose? My sister chose 1 billion without hesitation, and then she married into the wealthy Gu family and received a 1 billion gift. And I lived a normal life with my remarried mother. Who would have known that within three years of my sister's marriage, the Gu family would go bankrupt and her husband would take away the money and leave for another country?