C367 Intruders from both Sides

In the western part of Yanwu Empire, due to the accumulation of so many ancient battlefield ruins, more than half of the land in the western part of Yanwu Empire was covered in poisonous miasma. As time passed, the land in the western part of Yanwu Empire became barren and the population was scarce. It only accounted for less than a level of the total population of the empire.

However