Just After Rebirth, You Want Me to Defend the City?

In the Ember Wind Era, the day is like a knife, and the wind carries dust. It can grind the city wall into a skeleton in one night. Humans retreated to their strongholds and relied on the fire of the Guardian Realm to survive; the gray-scaled aliens followed the gray path and used every stronghold as a granary. The ember wind is coming, and the aliens are knocking on the city. However, he awakened in a desperate situation [Boundary City Blueprint] - the gray flame furnace lit the way out, the boundary wall nailed the gap, and the patrol tower illuminated the wind line. From now on, everything within the protective realm is territory; under the laws of the realm, life and death have a price. When the human race was crumbling and strongholds fell one after another, new cities rose out of thin air in the wasteland. Shen Yan stood on the boundary wall and laid down the first rule: "My territory is forbidden to foreigners."