Global Disaster Strikes: Stockpile Supplies and Survive to the End

The male lead is reborn half a month before the apocalypse, with a System inventory space. He stockpiles supplies, keeps a low profile, and prepares a shelter. The setting is a sudden global catastrophe, with all kinds of extreme weather disasters: freezing temperatures, floods, scorching heat, sandstorms, bacteria, and more. (No zombies + no harem + rational and decisive protagonist) The first nine chapters are about stockpiling supplies. The apocalypse begins in chapter ten.