Rebuilding Civilization in the End Times

It takes two production lines to produce one bullet? Copper, resin and glass are required to produce a mobile phone? Fortunately, you can redeem points for finished products! Can you also change the shape at will according to the holographic projection? Can you also summon historical figures to help with management? Qin Bai looked at the synthesis formula and operating procedures given by the manufacturing center and couldn't help but sigh: Are you sure this isn't Factorio? I will surpass Qin Shihuang and become the person who rules the planet! The introduction is weak, let's read the text! New book, no harem, no more than 3 female protagonists! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.