The mussel was considered to have done an excellent job as it could dig half a mile of railroad in an hour.
"Mussel, have you been staying in the fifth mountain since the beginning and left before?" Gu Xijiu highly suspected the possibility.
"Yup." The mussel added, "Im a mussel, I dont have to go out."
Gu Xijiu smacked her head as she wanted the mussel to dig a path to the upper ground. However, she seemed to have sensed something. She walked further and placed her fingers on the freshly dug wall.
There was something on the wall!
Since it was just soil, she took out a blade and poked it. However, the blade could only penetrate about an inch into the wall and stopped. Something in the wall was restricting the penetration.
The blade could even penetrate an iron wall in a single poke, not to mention the soil. However, there was something stronger than metal behind it!
She simply scraped away the soil and finally saw the object in the soil, it was a layer of transparent membrane. The blade bounced back when she poked it, what was that?
"Wizardry barrier! Master, this is a wizardry barrier!" The Firmament Stone screamed in Gu Xijius mind.
Gu Xijiu heard about it before; rumor has said that the monk who had a very high spiritual power could set a wizardry barrier and it could block whoever or whichever living things from entering or escaping. It was stronger than any wall. However, wizardry barriers were usually set above the ground. This was her first time seeing a wizardry barrier underground.
Apparently, the wizardry barrier was set to prohibit any form of entrance and exit.
Gu Xijiu touched the barrier with her fingers and realized that should be at the fifth peak. She wondered whether the sixth, seventh, and the eighth peaks were forbidden sites.
She looked at Si Chen who was touching the barrier as well; he sighed, "The mussel is just like you, it got lost and went the opposite direction! This is the border of the fifth and sixth peak. The sixth peak and above are forbidden, and no one could enter or exit, this is why the barrier is here."
Gu Xijiu was speechless.
Initially, she did not immediately believe him, but she noticed what he said was true when she teleported to the upper ground. She was standing on a yellow ground, and everything at the wizardry barrier was in orange. Once she got out to the upper ground with Si Chen, they saw a huge orange beast glaring at them near the barrier.
Its eyes were bigger than the lanterns in the palace, and they were glowing with a blaze! It raised its head and gave a long howl when it saw Gu Xijiu and Si Chen and then issued a fire towards them as it opened its mouth!
Fortunately, the fire was blocked by the wizardry barrier. Otherwise, the forest would have been burnt to ashes.
Gu Xijiu took a step back, "What kind of beast is this?"
"The Heaven Floating Wings." Si Chen held her hand and stepped backward, "The Six-eyes Spotted Killer Centipedes which you killed is its food. The two centipedes you bumped into should have escaped from the sixth peak. They are merely the food for the Heaven Floating Wings when they are in the sixth peak, but they could be the king when they go to the third peak"
In just a few seconds, the Heaven Floating Wings hit its claw on the ground and hissed! A huge Six-eyes Spotted Killer Centipede was caught and pulled out from the underground.
The Heaven Floating Wings tapped its claw on the centipede a few times, and it immediately became as weak as an earthworm. It was then eaten by the Heaven Floating Wings.
Although Gu Xijiu was brave, she could not resist trembling as she watched the bloody scene.
She almost died when she fought against the centipedes earlier. If she had to fight with the Heaven Floating Wings, she might not even have a chance to run!