The old battleship was the only piece of technology that Han Sen could find on the island. All other landmarks were completely natural formations.
Han Sen and the others couldn't really leave the white whale. Now and again, hordes of black snakes would emerge from the black sea to chow down on the mushrooms. But every time that happened, the white tiger beat them back.
Han Sen made many attempts to get rid of the mushrooms that were on each of their heads. All his efforts were in vain. Even if they managed to withstand the pain long enough to cut off the mushrooms, the roots were still embedded within their brains. It was only a matter of time before they grew back.
And the newly-grown mushrooms would be more colorful than ever. It made them want to cry.
Han Sen used his Original Water King Body, and as his body turned into liquid, the mushroom on his head lost its grip and fell to the floor.