Looking for Memories in Historical Texts [Quick Travel]

Si Xun is a ghost who has been wandering for who knows how many years. She has no memory and is wearing a student uniform from the Republic of China. She only knows that her name is Si Xun. Until one day, she met a system that said it could help her retrieve her lost memories at the cost of traveling to a different time and space to help others live again. Si Xun agreed. Story 1: The real daughter who was impersonated in the 1970s (female educated youth sent to the countryside vs. Young men sent to the countryside) Story 2: Older young women who returned to their hometowns in the 1980s (young women who returned to their hometowns vs. Disabled officers) Story 3: The big stars who disliked the poor and loved the rich in the 1990s (Miss Hong Kong vs. Young and Dangerous) ... [Follow-up stories will be filled in as written] Intention: Exchange sincerity for sincerity.