The Working Emperor of the End of the World: Invisible Moving Castle at the Beginning

A story about an idle businessman who does not save the world or upgrade to fight monsters in the last days, but instead goes to mine, mine, fish, and upgrade castles. We have traveled to a chaotic apocalypse where zombies are rampant, space is turbulent, alien beasts are invading, and aliens are visiting. As for myself, in order to survive, I am currently working hard doing odd jobs for the bosses. Your errand distance has reached five meters. Congratulations on activating the teleportation system. You have brought more than three items. Congratulations on opening the storage system. You have unlocked the Horticulture Department. Congratulations on opening the planting area. You got an alchemy manual. Congratulations on opening the alchemy workshop. You got a technical manual. Congratulations on unlocking the technology tree. Boss Wang's mining foreman: "Li Shan, if you can't collect a piece of black iron ore tomorrow, then you won't even have a piece of steamed bun tomorrow." Li Shan looked at the black iron ore in the system that automatically deposited 4,950 yuan into the mobile castle, and sighed. The next day, Boss Wang said: "? Where is the mine?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.