In the evening at the port of Darkness Port, a black yacht covered with mysterious silver linings was docked. It resembled a yacht from the old civilization but seemed a lot more high-tech.
As a matter of fact, sailing in the Purple Moon era was not a leisurely and relaxing activity.
Aside from the plethora of aquatic creatures, some of which were considered as sea monster threats, the different types of mysterious phenomenon at sea that were constantly changing was already a huge deterrent factor for humans to sail.
Some scientists once said that other than the current super-advanced technological products, all the technological products of the old civilization, including aircraft carriers, could no longer voyage around the Earth. As for submarines that once dove in the sea, they were as good as legends.