Transmigrating to Farm with a General in Tow

What? I've transmigrated and been reborn? As a scrawny little girl? Not only am I without a father or mother, but Grandpa ignores me and Grandma exploits me, too? At least I have an adorable little dumpling of a younger brother to keep me company! In my previous life, I was a female agent who died for my country. Nie Shuangshuang was ready to make her mark in this alternate world! First, a little goal: earn a hundred million! But... just as she was getting excited about starting a business, she suddenly discovered that her birth father's death had been planned. Was her birth mother silenced because she knew something? Why had the handsome servant she'd picked up by the roadside been acting so suspiciously lately? Why did her eldest nephew say she wasn't his aunt? Something was wrong! Nie Shuangshuang had originally planned to become an ordinary, wealthy beauty in this other world. She never expected her skills as a female agent to come in handy here, too. Investigate! Investigate every last thing! That's what female agents are best at! Nie Shuangshuang puffed out her chest and laughed. "There's nothing I, Nie Shuangshuang, can't uncover!" (Strong female lead and strong male lead! One female lead and one male lead! Sweet from beginning to end! A comeback and face-slapping story with a happy ending!)