Riven also instantly reacted, feeling deeply shocked. They had entered from the forked path above, circled around in a big loop, and finally reached the other end of the main passageway—the "front door" thoroughly sealed by modern technology!
"But... who exactly did this? Why use cement to seal it shut?" Riven's eyes moved back and forth between the two entrances, her mind in chaos, "No, the timeline doesn't match up, this kind of cement didn't exist three hundred years ago!"
Her gaze finally fell on Lin Yu'an, throwing out the most crucial question: "Could it be... other treasure hunters? They discovered this place first?"
Lin Yu'an didn't answer immediately, leaning against the cold cement wall, his mind racing as he reconnected and filtered through all the clues.
Clue one: A group of people, after the pirates three hundred years ago, also came here.
