Following the circular mountain, Lu Chen flew up and down, his divine sense expanded to the point of nearly ten meters around his body, and he took a closer look at the places he passed.

This is not because Lu Chen's ability is limited, but because this mountain has a huge magic circle, and without being sure, Lu Chen doesn't want to startle the snake.

The divine sense was well controlled, and after flying for a long time, suddenly Lu Chen's earlobe moved slightly, and a slight sound that was almost negligible sounded his ear drum.

"Puff~Puff~Puff~"

"Wow~Wow~Wow~"

"When~When~When~"

"What kind of sound is this?" Lu Chen was puzzled and touched the sound.

Arriving at the outside of a mountain, Lu Chen subconsciously stopped, his palm gently pressed on the cold surface of the mountain, and a subtle shock came faintly.

Lu Chen boldly released the power of his divine sense, and immediately felt that there was an extremely faint aura about dozens of meters away from the mountain on his right.

"Like a person?" Lu Chen was surprised, in the middle of the night, how could anyone be under the mountain, even if it was a monk miner digging for spirit stones, he should rest at this time.

Glancing around, seeing that there was no suspicious aura to follow, Lu Chen groped the surrounding terrain.

That person obviously didn't have any mana aura coming out, even though he was a monk, he used some special method to converge his aura to the same level as ordinary people.

Lu Chen pondered and searched carefully, he didn't dare to make too much movement, just because it was not far from the location of the iron gate.

After looking for a while, the sound inside gradually stopped, and then there was a panting sound like a cow, and then it stopped for a while, and the jingling sound came out again.

At this time, Lu Chen was sure that someone should be digging something, and the sharp weapon was very careful when hitting the rock, and it was intermittent.

After looking for a while, Lu Chen stepped on the ground on the side of the mountain full of dead leaves and wet mud. It's winter, and the ground is slippery due to the cold, and the ground is very soft due to the possibility of a rain a few days ago. But the softness may not be able to reach this point, Lu Chen stepped on it, and the center of gravity of his body fell inward, and he almost didn't stand still without using his mana.

Surprised, Lu Chen paid attention to the surface, squatted down and took out the flying sword and stabbed it gently, but even if the flying sword did not use its strength, it still easily fell into the ground.

"Huh?" Lu Chen's brows slowly furrowed, and he dug with a flying sword, only three or two times, and a hole large enough for one person to drill into suddenly appeared on the surface, and the hole was slightly smoother around it, obviously someone deliberately dug it out.

After pondering for a while, Lu Chen thought about it, and immediately lit a transmission note, and after a while, Liu Hong received the news and rushed over.

Tiptoeing closer, Liu Hong whispered, "Did you find out?"

Lu Chen didn't say anything, but made a boo gesture, pointed to the hole on the side of the mountain, and then took the lead and jumped in.

Entering the cave, the cold earth qi first invaded the body, bringing a hint of coolness. Lu Chen didn't have time to pay attention to these, staring at the dark cave with blazing eyes, and cautiously touched it in.