They brought New Moon Navy back to Ice City.

Many monsters were still roaming near Ice City. These monsters didn’t seem to know that the inner Ice Mountain had completely collapsed. Thus, as low rank monsters, they were blindly and ignorantly roaming nearby. 

The glacier land occupied a lot of land, so it wasn’t too realistic to deploy troops in hopes of eradicating all of the monsters. Now that Chu Mu had already defeated the core of the monsters, they lacked a leader. Thus, the low ranking monsters would gradually disappear later. 

In the time it took for them to gradually disappear, Ice City would be uninhabitable. Therefore, when he returned Chu Mu had to move these people to the safer Snow City. When these monsters completely disappeared, they could once more rebuild Ice City. 

With New Moon Navy leading the way, they would probably be able to successfully migrate the citizens. However, the migration of a few ten thousand people was still an enormous migration. 

    ……

Ice City suffered the heaviest destruction, but after Chu Mu mobilized the troops, this area of seventy cities had gone...