That night, Hao Yu and Hui Tong stood on the top of the submersible together, waiting for the Northern Lights to appear, and they didn't have to wait long, and the brilliant brilliance appeared from the sky and soon lingered in the sky overhead.

"How's it going? It's a pity that you didn't come to see it two nights ago, but we're lucky that this Northern Lights will be there for a few days. Guo Huitong pointed to the brilliance of the sky and said to Hao Yu, who was already fascinated by the eyes beside him.

Hao Yu nodded subconsciously, he did put his whole mind in the sky at this time, but it was obvious that Hao Yu was not fascinated by the beauty of the Northern Lights, but he sensed something different from the brilliance rippling in the sky.

Suddenly, Hao Yu felt someone patting him on the shoulder, he suddenly came back to his senses from his stunned state, and found that it was Huitong next to him who was patting him, and when he saw him, the girl asked him, "Are you okay?" Did you look at it again just now? Why do I think your attention is not on the Northern Lights at all. ”

Surprised by Hui Tong's intuition, Hao Yu scratched his head and smiled: "I did get distracted just now, but I found that this Northern Lights is not a simple light, it is also mixed with a strange energy, if you try to breathe it out now, you will definitely have a completely different experience from before." ”

Blinking a pair of big eyes, Guo Huitong thought about it, or as Hao Yu said, sit cross-legged, and began to breathe out the exercises, at first! She didn't feel that there was any difference, but as more and more energy breath was incorporated into her internal organs, she gradually noticed the difference, and she really devoted herself to the practice, and forgot to see the Northern Lights.

Smiling slightly, Hao Yu also crossed his legs, slowly closed his eyes, and began to practice in the light of wandering in the sky.

I don't know how long it took, there was no longer a Northern Lights circulating in the sky, Hao Yu was the first to open his eyes from meditation, and soon! Guo Huitong also opened her eyes, her little face was full of excitement, she looked at Hao Yu and said: "I didn't expect the effect of practicing in the Northern Lights to be so good, just this time, it is comparable to the previous cultivation for several days." ”

In the next few days, they waited for two more days for the Northern Lights to come, and every time the Northern Lights came to the sky, Hao Yu and Guo Huitong couldn't wait to practice, and because of this, their skills had been greatly improved in just a few days, and Hao Yu felt that he was about to enter the middle stage of the king level, and he was only one foot away.

It's been the eighth day since he came here, and in the evening of this day, Hao Yu was lying on the top of the submersible's shell as usual, watching the sunset slowly fading in the distance, and his thoughts flew in his mind: "Where did that strange energy that appeared with the Northern Lights come from? If I can find the source and go there to practice, I think I will soon be able to break through to the middle realm." ”

After thinking of this, Hao Yu was like a demon, and began to search in the big lake, he put on a special diving suit, dived to the bottom of the lake, and searched one place after another, hoping to find the source of that strange energy, but it took several days, and Hao Yu gained nothing.

On the tenth day, just the last night before they decided to leave here, Hao Yu had no sleep, because there was always a question in his heart that could not be answered, Hao Yu sat on the top of the submersible, unable to sleep for a long time, when it came to the middle of the night, looking at Hao Yu in the distant sky, he suddenly accidentally saw that in that sky, there was a flickering point of light, just revealed a virtual shadow of the door, but the virtual shadow really flashed away, Hao Yu couldn't be sure if he was dazzled.

At this time, Guo Huitong, who should have fallen asleep a long time ago, didn't know if he couldn't sleep either, opened the hatch, and walked up: "Can't sleep? I can't sleep either, I think I'm going to leave tomorrow, I'm really a little reluctant, I've been here these days peacefully, it's really good." ”

Nodding, Hao Yu answered and said softly: "It's very good." ”

Suddenly, his eyes were fixed on the spot of light he had seen before, because when his eyes swept over there unintentionally just now, he saw the phantom of the door flashing again, this time! Hao Yu was sure that he was not mistaken, and with a slight touch of his feet, the person floated out.

"What are you going to do?"

"Come, I'll show you a good place. ”

The two flew side by side, and under the guidance of Hao Yu, they approached the bright point of light in the sky, and Hao Yu realized that it was not a star he thought, but a strange point of light that wandered between heaven and earth, it was floating in the void, silent, but emitting a light like stars in the sky.

Looking at the point of light that seemed to be floating in the air, Guo Huitong was full of curiosity, stretched out his hand, wanted to touch it, and suddenly! A circle of phantoms came out from that point of light, and before Hao Yu and Guo Huitong could react, they were taken and fell into an invisible door.

"Ah~ How can this be? I'm so scared, Hao Yu! Where are you?"

"I'm here, hold on to my hand and don't let go. ”

The two of them seemed to enter a long, pitch-black passage, rolling, and walked forward, I don't know how long it took, when Hao Yu felt dizzy and swollen, and when his eyes were dazzling, he vaguely saw that there seemed to be light in front of him, he hurriedly shook his head, relieved him, hurriedly moved his right hand, and when he noticed that he was still holding the girl's hand, he breathed a sigh of relief.

"We're going to get to the place, wake up. ”

Sensing that the girl's state was a little wrong, Hao Yu tried to pull her closer to his side, leaned closer, and shouted to her.

A dazzling light, Hao Yu's eyes were almost unable to open, and he and Guo Huitong finally appeared in a bright place after a long dark passage.

After getting used to the light around him, Hao Yu opened his eyes and looked around, and he found that he appeared in an underground cave, which was dotted with bright light because of a strange spar, just like the day outside.

After Hao Yu broke off a bright spar on the stone wall and put it in his hand to sense it, he was pleasantly surprised to find that the question he couldn't figure out before had an answer, it turned out that the strange energy brought by the Northern Lights was brought out of this cave.

"We ...... This is the treasure land, if I practice here, I will definitely be able to break through to become a king-level powerhouse in the fastest time, ahahaha......" Guo Huitong was happy, tilted her head and crossed her waist, without any image of a girl, laughed, and soon! She took out a futon and sat down, and after sitting down, she began to meditate and practice.