Stone Age: Spear of Technology

Lin Yuan, a modern science and engineering student, accidentally traveled through time and space and returned to the primitive Stone Age about 10,000 years ago. Human beings are in the tribal stage, relying on hunting and gathering for a living, with primitive languages ​​and full of fear of natural phenomena. With a complete system of modern scientific knowledge (physics, chemistry, engineering, medicine, agriculture, etc.) In his mind, but without any modern tools, he followed Lin Yuan from the Stone Age to civilization.