Traveling Through Time to Cultivate Immortality, I Can Recycle Materials and Unlock Technology

What should you do if you accidentally travel to the world of cultivating immortals? Others have incredible abilities, but you don't even have spiritual roots? Then we might as well not follow the conventional method of cultivating immortals and directly recycle the materials for cultivating immortals. Lin Zheng and his three roommates each performed their own functions: those who served as military advisors, those who engaged in research and development, those who cheated... (This was crossed out) gave speeches, and those who engaged in infrastructure construction. The four of them began to smelt iron in the blast furnace of the world of immortality, develop tanks, fight landlords, divide fields, beat tyrants, and steal materials. The four people had a clear division of labor. They used plug-ins and industrial technology to achieve what is called "physical cultivation". Lin Zheng's technology tree could only develop black powder at the beginning, but now it can build cars and tanks. In the age of cultivating immortals, it's time for a change. (Traveling through the system, farming culture, infrastructure construction, Shuangwen, fighting for hegemony, oriental fantasy)