For the sake of the Sea Swallow Eggs.
After Captain Kostor and the other young men completed their swimming lessons, they immediately set sail, steering the Fresh Flower Vessel unsteadily towards the cave. As they approached the cave, which was not far away, they could clearly see its appearance—it was not very big, as the mountain ridge was not high, and the flat entrance of the cave resembled a large mouth.
The inside wasn't deep either; they could see clearly into the cave with just a glance.
Especially since Captain Kostor was using a telescope, his view was even clearer, "Oh, my God! There are bones!" He saw several decaying human skeletons lying inside, as well as various tattered items, and even the wreckage of a small boat.
"Drop anchor!"
"Launch the canoe!"
He shouted, preparing to disembark in the canoe to get a closer look at what exactly was inside the cave.
...
The Castle.
The nearby Dragon Kui Fields.
Liszt was inspecting his Dragon Hollyhocks.