Li Si Te did not know how vast the Legendary Continent was. Based on some previous conjectures, and also on Acherloides' study of astronomy, it could generally be inferred that the world was a massive sphere.
However, due to incomplete theories and lack of measuring devices, more accurate verification could not be completed, so the exact size of the Legendary Continent remained unknown. Over the past years, even though Li Si Te had become a Dragon Knight and Acherloides had become an Archmage, there was still no time to travel around the world.
Their activities were generally limited to the northeastern corner of the Legendary Continent, including the Sea of Azure Waves and the Shell Sea, going no further than reaching the edge of the Devil's Sea.
Their understanding of this planet was limited to knowing there were two continents on the endless ocean—The Legendary Continent and the Mafa Continent.