After coming quite deep inside the mine, Li Feng hid himself with Yue's Phantom World and continued to observe how the situation developed. His next steps would depend on how things progressed in this fight.
With one of the foundation establishment realm elders holding off the rank 5 bird, the other elder was able to take the disciples inside the mine. Obviously with the rank 3 and rank 4 birds attacking, quite a few low grade disciples were killed but the elders did not worry about that.
After getting inside the mine, the elder took out a token and activated it. Immediately the super large scale formation of the mine became visible and the emergency defensive system of the formations started operating.
Seeing this, the other elder who was still outside disengaged from his fight and flew toward the mine at his fastest speed. The blue feathered bird monster also followed behind him.
The activated formation had covered the whole mine in a barrier. Before coming in contact with the barrier, the elder took out a token and activated it. Then when he made contact with the barrier, he was able to pass through it without any resistance.
But that was not the case for the blue bird. Unlike the elder, when it made contact with the barrier, it was repelled and even got a little hurt. Seeing this, the bird screeched in fury and started to attack the barrier with its lightning clad claws.
Those attacks were not able to completely break the barrier but each attack was continuously weakening it. Even with two foundation establishment realm elders trying to empower the barrier, it was getting weaker and weaker.
But just as the barrier was about to reach its critical point, three other foundation establishment realm elders appeared and poured their spritual energy into the barrier. This immediately returned the barrier to its perfect state.
After that the elders started to take out several more token and poured spiritual energy into them one by one. Immediately more formations of the mine became activated and the place turned into a impenetrable fortress. But the worried expression was still visible on the elders' faces.
The reason for their worry was simple. They were aware of the group of monsters that was behind the large blue bird. With their current defense, they could withstand five or six early stage foundation establishment realm cultivator without any problem but if the number of rank 5 demon beasts exceeded that then the mine would be in trouble. A rank 6 beast could also create some trouble for them.
Seeing all the formations, Li Feng was quite impressed. He judged that even with the rank 6 demon beast, breaking this formation would not be easy for the demon beasts. That was because according to Yue's bloodline given knowledge, the rank 6 golden rat was not very strong in terms of personal strength. Instead it was capable of boosting the strength of other demon beasts.
But that would only be true if the demons did not have reinforcements. This mine was surrounded by several forests and those forests had way more than just a dozen rank 5 demon beasts. So Li Feng was sure that sooner or later more demon beasts would show up.
While thinking about this, with his powerful spiritual sense, he was able to hear the conversation between the elders. This conversation was taking place through spiritual sense so it was basically like telepathy. But with his own superior spritual sense, Li Feng was able to eavesdrop on their conversation.
The two new elders who had came here with the ship were being asked about why the demons were suddenly attacking them. Those two elders were unable to give a proper answer as they themselves were not sure about the reason. This attack was very sudden even for them. But they guessed that everything that was happening was not random and someone was definitely behind it.
From the conversation of the foundation establishment realm elders, Li Feng also came to know that the sect had already been informed about the situation with a spirit item for long distance communication and the sect was sending a golden core realm cultivator to the mine. This news was quite worrying for Li Feng.
He was confident that anyone in the foundation establishment realm would not be a danger for him. But he was not sure about a golden core powerhouse. The boost of power that reaching the golden core realm provided was very high compared to reaching the Foundation Establishment realm. That was the reason why Li Feng was worried about the arrival of a golden core.
That was not all. If the sect was sending a golden core elder for this matter, then the danger this mine was facing was definitely greater than what Li Feng had seen so far.
Even just a late stage foundation establishment realm cultivator should be able to take care of it if the danger was limited to what Li Feng had observed so far. Then the sect would not need to send a golden core realm powerhouse here. With these thoughts in mind, Li Feng decided to continue hiding and observing the situation for the time being.
...
The elders were able to hold on quite well even after all the other monsters joined the blue bird in attacking the barrier. With all of the elders working together, even the boost given by the golden rat was not enough to break through. Just as it was looking like elders would be able to hold on until the arrival of the golden core reinforcement from the sect, a loud roar echoed through the whole area.
As Li Feng was focusing his spiritual sense on the battlefield, he had no idea what the source of this roar was. So after hearing this, he extended his spiritual sense toward the roar ar the distance and found a large bear demon beast. It was giving off an intimidating aura of a rank 7 powerhouse.
This beast quickly approached the mine while it's whole body was shining with a bright red light. Then after reaching in front of the barrier, the bear demon beast opened its mouth wide and a powerful blast of red spiritual power was released from it. Seeing this, Yue immediately told Li Feng that this bear had a trace of the dragon bloodline and the attack it released was similar to the famous dragon breath attack.
As soon as the breath attack hit the barrier, it started to dim. Then after a few second, the first barrier broke. That was followed by the breaking of the second and the third barrier. The fourth one was the last one and fortunately it was able to hold on until the breath attack came to an end. But even this last barrier was full of cracks after withstanding the breath attack and the other demon beasts immediately tried to take advantage of that.
So what would the elders do in this terrible situation ?