Former Soul, Present Body

I have been successful in my life but am already in my twilight years. I fell asleep on the balcony of my home and woke up as someone else in a foreign country. This was not a time travel in a novel or TV show, but a deliberate conspiracy by a genius scientist. How to survive this quagmire and how to resist the pursuit of ambitious scientists? With the body of a girl and the soul of an old woman, what kind of sunshine and darkness will I be exposed to in my new life, and what kind of bond will I have with the old relationship in my previous life? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.