Su Nuannuan, a 28‑year‑old rural girl raised by her grandmother, escaped poverty through the college entrance exam but faced relentless job discrimination and harassment. She took a loan to study abroad for a doctorate in medicine, worked part‑time to pay it off, and was finally hired by a top hospital in the capital. On the eve of her return flight, she dreamed of a girl named Su Nuannuan who starved to death with her family in the winter of 1961. The girl wore a lotus jade pendant exactly like her own. Waking, Su Nuannuan examined her pendant, which cut her finger, absorbed the blood, and transformed: the lotus vanished, leaving a blank tablet. A red mole appeared on her left wrist, through which she entered a space. Inside was a spirit spring whose mist instantly refreshed her, a two‑story pavilion with ten first‑floor compartments that were each as vast as a soccer field and possessed time‑stasis properties—a cup of boiling water remained boiling after an hour—and a second floor like a normal living area. In front was ten mu of empty land. When she emerged, hours had passed, and the jade pendant now showed the number “90.” That night a voice repeated, “In three months, comets collide, the one from another world returns home.” Su Nuannuan deduced she would transmigrate to 1960, and that she was originally from that world: her soul had left at age six due to a high fever and lived in the modern era as her grandmother’s granddaughter. Now she was returning. With ninety days left, she used her savings of over three million yuan to stockpile supplies. She returned to China and began frantic bulk purchases: two thousand catties each of rice and white flour, one thousand catties of millet, red beans, green beans, corn, and cooking oil; one hundred freshly slaughtered pigs and two thousand chickens; hundreds of fruit tree seedlings and vegetable seeds; thousands of pieces of clothing, shoes, and bolts of old‑fashioned fabric from a failing factory; sewing machines, watches, bicycles from Yiwu; infant supplies such as milk powder and diapers; countless snacks, candy, and seasonings. She also rented medical equipment, downloaded advanced research data, and on the last day infiltrated a foreign port, using her space to steal all containers and five cargo ships. When the countdown reached “1,” she transmigrated into the body of the original Su Nuannuan in the middle of the 1960 college entrance exam. The girl had a high fever and had written nothing. Su Nuannuan secretly took a fever reducer from her space, drank water, and regained clarity. She then completed the exam papers despite the lost time, relying on her modern education and the space’s resources. The story covers her urgent preparation and her first challenge in the new era, armed with the mysterious space and her medical knowledge, ready to survive and change her fate.