Apocalyptic Train: My Sister-In-Law Helped Me Find a Flight Attendant at the Beginning

[Doomsday Survival + Sister-in-law + Multiple Women + Upgrade Train + Dungeon + Humanity] [Purely rub by hand, never use AI hydrology, readers can supervise] Li Yuanshan attended his brother's wedding. Unexpectedly, he saw his brother's prairie at the wedding, and it was his mean boss who brought the prairie to his brother. When the apocalypse came, how did Li Yuanshan board the train with his boss's wife and the flight attendants he found in the apocalypse, encountering various incredible events, and led the girls to continue to struggle to survive, and to meet a different new world together.