In the northern region of the Mensa Strait, patrols from the Northern Army Fleet appeared frequently. This forced the Mine Guard Army's Magic Airship to hide above the clouds, not daring to drift too close to the sea surface lest it be spotted by those patrols.
Once they were discovered by a patrol, a battle would be inevitable. If those patrols' Three-Masted Sailboats managed to escape, they might bring the Northern Army from Frozen Soil Island.
The Mine Guard Army's activities around the Mensa Strait amounted to searching for those Imperial Merchants selling Half-Elves right under the Northern Army Fleet's nose.
If Roy had not wiped out the Gray Dwarf Bandits around the Kui Island Sea and the Mist Sea, those Imperial Merchants would never have dared to meddle in the Slave Market of these waters. That would have been like snatching food from the Gray Dwarf Bandits' hands...
It was precisely because hundreds of thousands of Gray Dwarf Bandits had vanished from the Kui Island Sea that Imperial Merchants had the chance to get their hands on the Slave Market.
Yet the elves had no guard against Imperial people at all. Living conditions within the Silver Moon Elf Kingdom were worsening by the day, and all kinds of unequal policies targeting Half-Elves had made many of them unwilling to remain in the Silver Moon Elf Kingdom. As a result, huge numbers of Half-Elves flooded into certain port cities, leading to this massive slave-trading operation.
This slave trade was so vast that it nearly matched the total number of elves sold by the Gray Dwarf Bandits over the past twenty years.
Aside from Roy's Mine Guard Army, some organizations in the Elven World had also formed Rescue Teams. For example, several Adventure Groups from the Adventurers Guild had banded together