Prehistoric Conservatives: I Am Truly a Time Traveler

The time traveler Li Changan came to the prehistoric world and was well aware of the dangers of this world - saints fighting, calamities destroying the world, and powerful men slaughtering all living beings at the slightest disagreement. He set an iron rule for himself: Stay tight! Don't waste time! But he has a [robust system] - only safe behaviors can be rewarded. The problem is: the system's "security judgment" is getting more and more outrageous... >"I just set up a formation at the entrance of the cave. Are you going to give me an innate spiritual treasure?" >"I just wanted to go out and buy some elixirs in a low-key manner, why did I end up in a lich war??"