Raising a Bun with a Daily Life System

Yuanxi had a wonderful dream, but after waking up with great excitement, he realized it was actually a real-life situation with guns and ammunition.

Confused and startled, he quickly fled. Who would have thought that he, a grown man, would suddenly have a son? The problem is, who is the child's father? It was too dark, and he couldn't see clearly!

Also, what is this life system that is bound to him? There's a long list of skills, including farming, animal husbandry, gathering, cooking, construction, skinning, sewing, and casting... It goes on and on without an end in sight. Wait a minute... What is that "room technique" in the middle?