Stockpiling Supplies for Disaster: Find a Mountain and Live in Seclusion!

Stockpiling supplies + fleeing famine + farming + a pocket dimension + cozy everyday life (The first part of the novel focuses mostly on the female lead's daily life. Later, there's more about her and her family clearing land and farming deep in the mountains.) The female lead is a 996 office drone, working overtime until midnight every day to pay her mortgage. Then she suddenly receives a System notification: in five days, she'll transmigrate to an alternate ancient dynasty and will never be able to return to the modern world. After thinking it over all night, she starts buying everything in sight. She won't be able to get used to ancient cooking staples, so she has to buy them! Electric appliances, medicine, and a mini hot pot: they don't exist in ancient times, so she has to buy them! Five days later, the System says the time has come. Just before transmigrating, she suddenly realizes she forgot to ask: is she going over in body or in spirit? She's not a princess, and there's no prince's manor. She's transmigrated right into a year of disaster! The roads are packed with refugees, but luckily she has a pocket dimension stocked with supplies. While everyone else gnaws on dry flatbread, she eats lobster! While everyone else drinks thin porridge, she brews Longjing tea! While everyone else digs up tree bark, she watches TV! Unfortunately, war ruins her retirement plans. She has no choice but to join the refugees, only to run into her family, who have come looking for her...