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The hidden cave entrance wasn't large, only about one meter wide and two meters tall; yet once inside, it revealed a completely different world. The walls around were clearly artificially carved, even bearing the marks of sculpting. And the further they walked, the more spacious it became. From the initial meter wide and two meters high doorway, they soon reached a width of two meters and a height of three meters. The entire passage felt like it was winding downwards, yet it wasn't stuffy at all—it was evident there were air vents.

Having walked over a thousand meters, suddenly, the space ahead dramatically widened, and they had entered a large underground hall.

"Look quick!" Bai Yaning exclaimed, "There's a huge door ahead!"

Everyone shone their flashlights in that direction, and with that illumination, they were all stunned.

"What a massive door!" They all gasped.