Journey Through the Demon World ③（2）

[Demon Realm] Southern Territory Underwater City The Southern Territory is home to an underwater city inhabited by demons adapted to aquatic life. As a general rule, residency permits are granted only to those capable of withstanding water pressure at depths of at least 500 meters. The population consists primarily of technicians who extract undersea mineral resources, fishermen who harvest deep-sea organisms and seafood, and merchants who trade with them. Access between the surface and these cities is provided by specially designed magical sailing vessels protected by magical barriers; theoretically, these ships are capable of diving to depths of up to 800 meters.