Reborn as a Train Attendant

In China's railway network in 2024, train attendant Chen Xiaoshuai's routine ticket upgrades and fire-safety inspections conceal a world-shaking secret. The biological scanner he wears can see genetic markers from cryogenic pods inside passengers, and every time he handles a power outage on the overhead lines, he edges closer to the truth behind the SYT Time-Space Leap Project from twenty years ago. This top-secret project, which bound human cryopreservation technology to the high-speed rail energy system, created Su Xiaoxiao, a cloned attendant who never ages, and also caused time-space rifts to appear throughout the northwestern railway network. A migrant elder's enamel mug is coated in ice crystals at -50°C; a fetus in a pregnant woman's womb carries genetic memories from 1998; and the refrigerant in the dining car's freezer is actually a liquid time-space medium that keeps clones alive. When Chen Xiaoshuai discovers that his fingerprint can activate the control panel of an experimental train from twenty years ago, and that his mother's work log has appeared in the cryogenic pod database, a deadly struggle over immortality and ethics quietly unfolds aboard the speeding Z12 train, with every ticket inspection and every spark from emergency repairs in a rainstorm. Every child's ticket he personally issues could belong to a time traveler just waking up.