[System + wretched development + relaxation + pretending to be a pig and eating the tiger + stabilizing the world]
The soul travels through the ancient years of war and famine! The people were displaced and miserable.
In order not to starve to death, people ate wild vegetables, chewed tree bark, and drank bran porridge to survive.
As a modern young man, the protagonist has traveled through time and possesses a system that defies heaven, so he naturally wants to change everything.
He just wants to change, but he doesn't want to fight and rebel!
So I stayed in a remote mountain village, opened up wasteland for farming, and vigorously developed agriculture, industry, and commerce!
In the end, the world was stabilized without spending a single soldier.