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According to the world's known maps, the area of Harmony Island where humans can live is close to an ellipse, radiating from the Great Shrine of Harmony Island as the center.
From the sea level and the state of the sun, Lu Ban could tell that this world was also a spherical planet and not some flat continent.
Therefore, based on ship speed and the map, the maximum size of the civilization on Harmony Island was no bigger than Europe, with everything beyond being covered by Pure Fire.
After the Pure Fire burns the seawater, it leads to a variety of wonderful weather phenomena, such as the thunderstorms located at the border right now. These thunderstorms contain powerful forces, and not even a Shrine Maiden could withstand the invasion of that lightning. The raging sea ablaze with fire, the rampant storms—no ship, even with divine protection, could navigate such waters.
