The blue light spread and soon spread into the canopy of the big tree demon. Together with its own power, it quickly extinguished the surrounding black fire, successfully saving its own life.
However, after several twists and turns, it was seriously injured. It took more than a quarter of an hour for it to regain its strength, and some of the blackened branches and leaves bloomed buds again, shining with green light.
"This guy's vitality is ridiculously strong!" Han Feng looked on coldly, muttering secretly in his heart.
After dozens of breaths of time, as a large amount of spiritual energy merged into the body of the big tree demon, brand-new branches and leaves grew out one after another, making it shine, and half of the injuries were recovered.
"The fire is out, and you are young again. Isn't it time to get down to business?!" During this period, Han Feng also took medicine to adjust his breath and regain his energy. At this moment, he said coldly.
"I understand, I understand." The big tree demon responded hurriedly.
After saying this, its main trunk glowed, and then the entire crown of the tree also emitted a bright green light. It slowly condensed and concentrated, and in a short time it transformed into a talisman. The lines on it were complicated, as if they were made of thousands of strands. It is outlined with green lines, like jasper, as bright as fire.
"call……"
This talisman flew upwards at a very slow speed, covering a distance of only ten feet in one breath, as if it was very heavy.
Han Feng staggered his body and allowed the talisman, which was ten feet in size, to rush to the top of the cave. With a bang, it was heavily imprinted on it.
Immediately afterwards, the talisman spread out and turned into thousands of threads attached to the stone wall, covering the uneven stone surface like a spider web.
"Buzz..."
There was a sound like a machine was turning on, and the stone surface with a radius of twenty to thirty feet on the roof of the cave began to glow gray, and a line of stripes was revealed, which gradually overlapped with the talisman silk thread offered by the big tree demon. It was originally uneven. On the stone surface, the stones rose and fell. After a while, the entire stone surface became extremely flat and smooth as a mirror.
Han Feng was stunned for a moment. He was a little surprised when he saw it. He didn't expect such an arrangement. This underground palace was probably a stone talisman, with talismans engraved on every place.
Just as he was thinking secretly, the stone surface above changed again, and there was a burst of light. In the center, about nine feet in radius, a hole suddenly opened. It opened quickly, and in the blink of an eye, it turned into a hole. It was empty and there was nothing else. , there was a faint cool breeze blowing out of it.
"Sir, the entrance to the cave has been opened. Please go in as soon as possible. I won't be able to hold on for too long!" the big tree demon said hurriedly.
"Are you the guard here?" Han Feng asked without answering.
"I don't know. This is my innate ability. After living for such a long time, this is the first time I have opened this cave." The big tree demon gasped, "Please go in as soon as possible. Every breath makes me uncomfortable." It’s so extreme, I, I can’t hold it anymore!”
Han Feng's soul power spread out and penetrated into the entrance of the cave. After careful inspection, he found nothing unusual. Moreover, the passage in the cave suddenly became larger dozens of feet away, as if another horizontal passage had penetrated it.
He didn't hesitate any longer and rushed in immediately. In a few flashes, he reached the horizontal corridor.
At this moment, the hole below began to heal and disappeared in an instant.
Han Feng turned around and touched the stone wall, and found that it was tightly sealed, with no trace of healing at all, which was secretly magical.
Then, he looked back at the corridor and found that it was surrounded by sparkling crystals, and the walls were also densely packed with crystals, which made him uneasy, fearing that they would suddenly explode again, forming a terrifying flame.
He didn't dare to stay and immediately walked to the right, because at the last moment, the big tree demon sent him a message through the air, saying that if he walked all the way to the right, he would be able to get out of this underground palace without any accidents.
As for the reason, it only said that it was a memory hidden deep in its soul consciousness, and it didn't know whether it was correct.
Naturally, Han Feng didn't know whether it was true or false, but he must not have dared to deceive him, otherwise he would go back to the cave and die.
Moreover, in Han Feng's opinion, the biggest function of this underground palace is to seal the ghost princess. It has no other purpose and there will be no secret treasures.
Even the reason why he was able to go to the cave and the lake smoothly was probably thanks to Yan Yanfang's guidance, especially that time she broke out of the passage and definitely passed through many corridors to reach the destination directly. .
At the same time, he secretly guessed that the plants on the island were probably the work of the ghost princess. As for the purpose of cultivating the resurrection grass, only Yan Yanfang and the ghost princess knew.
In less than half an hour, Han Feng walked out of this horizontal corridor and went to another passage without any danger.
This passage was larger, three feet wide, with crystal light shining all around, and the walls were still inlaid with crystal stones, which dazzled Han Feng.
He didn't think too much. As soon as he arrived here, he immediately turned right. After walking for a while, he had to turn, and then he started to wind up and twist and turn.
Time flew by. Han Feng turned right all the way and passed through countless passages. Finally, after half a day, he came to the passage he entered from.
He found that the crystals in this passage had disappeared. It must have been consumed by the self-explosion that time, making the place dark and dark at the moment.
What's even more terrifying is that even his soul power can only cover an area of five to six feet.
"It seems that Yan Yanfang was responsible for the crystal explosion before. Her purpose was to get me into the cave. Fortunately, her trick was detected in advance. Otherwise, when she was at her peak, she would have absorbed half of the Resurrection Grass. Energy, I am in danger!" Han Feng was secretly happy while running quickly.
This passage was very long, and it took Han Feng half an hour to reach the end and successfully reach the entrance passage.
The entrance passage climbed upwards in a spiral shape, and Han Feng kept going around in circles. It took him a while to finish, and he successfully reached the entrance to the west.
The hole was still open at this moment, and there was even a ray of sunlight shining in, making it seem a little warm.
Han Feng took a step forward and finally returned to the outside world.
"Haha, you finally came out, hand over everything you got, and our brothers can consider sparing you!"
Suddenly, a hearty voice came from mid-air, the tone was arrogant and extremely arrogant.
Han Feng was deeply surprised. He looked up and followed the sound, and saw Wu Nan floating in the air, eyes like an eagle, staring at Han Feng gloomily.
Not far away from Wu Nan were floating two monks whose aura was not weaker than his. One was wearing a light cyan robe embroidered with gold threads, and the other was wearing a fiery red brocade coat.
