Captain answered honestly, "Ordinarily, when setting sail, one follows the charted courses that predecessors have explored. Deviating from them makes it very easy to encounter unknown currents or hidden reefs, and death would likely leave no whole corpse behind. Therefore, vast as the seas are, the truly explored areas are extremely limited, and there are a great many islands that remain undiscovered... For example, the island where the two of you have secluded yourselves had never been found by us prior."
Zhao Changhe nodded, not to mention islands; even if there were a continent, it wouldn't be so easily discovered.
