I Became a Primitive Witch

As a high school student, Su Hei had an explosion during an experiment. He was reborn in a different world and became the son of the tribal leader. Later, he became a shaman according to the tradition of the time. Su Hei wants to use scientific knowledge to build a new different world. Drill wood to make fire, make clothes, cultivate grains, make stone tools, make agricultural tools, build city walls and fortresses, build schools, forge weapons, etc. Use the strongest scientific knowledge available to build a new human civilization. (Easy farming article, relax your body and mind in your free time, if you have a piece of land, you have to plant something.)