Rise from Primitive Civilization

23-Year-old Su Yun traveled through time and came to the primitive world. The first time he traveled through time, he brought a system with him. An auxiliary system made by an advanced civilization for citizens, which contains the crystallization of human knowledge from ancient times to the present and the inheritance of a civilization. Armed with a system, he began to conquer tribes, create civilization, and lead the rise of civilization in this strange primitive world. (Purely technological development, there will be no fantasy, magic, or immortality. The system is not a plug-in, and it will not be too unnatural, but it is not hard science fiction either.)