Summary

Traveling through the primitive and wild world, Xia Tuo, who accidentally slapped the system to death, suddenly realized that he had done something stupid.

Dare to ask how to filter and purify salt?

What and what alloy is bronze?

How to make a bow and arrow?

God, how could it be so difficult to be the leader of a clan…

Looking at the pile of rocks and animal bones in front of him, Xia Tuo missed the system that was shot to death.

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