time as currency in science fiction

# GROUP PAMPERING In her previous life, Su Su offered up her life for science, and in the end, she developed a system that could let her travel through time and space, allowing her to return to a time 30 years ago, to the day before her family was destroyed. She was only four at that time, and she was the legitimate lady of the Su family, though she ended up wandering the streets. At the same time, the imposter, Su Nan, lived a lavish life in the Su family, and she was also well loved by her brothers. When Su Su brought with her a dirty doll and stepped into the Su family's mansion, they were holding a grand birthday party for Su Nan. But this was also a sign that the Su family’s tragic fate was about to change! However, the imposter, Su Nan, panicked. “She’s just a beggar, and yet she’s pretending to be Su Su! Chase her out!” The guests snickered and agreed with her. “Where did this girl come out from? The Su family lost their eldest daughter when she’s just one years old. Someone must have told this four-year-old girl to do this, right?” Su Su ran into her noble and reserved big brother’s arms. “Brother, I’m Su Su! I came back! If you don’t believe me, we can do a paternity test!” In her previous life, she was only discovered and brought back to the Su family when she was an adult. Unfortunately, by then, the Su family was already persecuted to the point where it was almost ruined. This time, Su Su swore that she would save her brothers! Much later, when the four-year-old Su Su used the technology to save the Su family, Su Nan’s real identity was exposed. In truth, the Su family’s downfall was linked to this imposter…