Doomsday Cold Wave

Story summary: The female protagonist is reborn at the company annual meeting before the outbreak of the doomsday cold wave and zombie tide. She abandons the hundred tons of coal she relied on for survival in her previous life and chooses a seemingly useless luxury RV instead. She spends a fortune modifying the RV, unlocks an infinite space system to frantically hoard supplies, builds a safe fortress in the extremely cold apocalypse, but is hunted down by the similarly reborn green tea Su Yu along with thugs, falling into a life-and-death crisis.