My disciple's cultivation returns ten thousand times, so I have to be invincible.

Confused, Zhong Qing opened the storage ring and took out the two items that were vibrating.

Zhong Qing was a little surprised to see these two things.

"I see. I was wondering why it looked familiar."

At this moment, there were two pieces of iron in his hands.

The two patterns are very similar in appearance, and there seems to be some kind of resonance between the waves, as if they belong to one.

One of them was the piece of secret iron that he had looted from the Fuguang Cave that he had destroyed when he first arrived in the Northern Territory a few days ago.

At that time, the female cultivator said that this piece of iron carried clues to a complete secret realm.

However, after Zhong Qing got it, he couldn't figure out anything at the time, so he put it aside for the time being.

The other piece of iron was the one he had bought at the auction in Pengcheng, East Region. The description at the auction had also mentioned the existence of an ancient secret realm.

Originally, Zhong Qing had no interest in the secret realm, but the piece of iron alarmed the system, and it suggested that he buy it at all costs, so he made a bid.

But after he tapped the iron piece, the system stopped working. He tried to inject spiritual power into it but failed to activate the iron piece, so he put it behind him.

It wasn't until today when these two pieces of iron resonated with each other that I remembered this matter.

I never expected that these two pieces of iron actually came from the same place.

"System, what exactly is the use of this so-called secret realm iron piece? Why was there no movement before, but now it suddenly responds?"

Zhong Qing asked.

"The iron piece is the key to unlock a secret realm. It can also attract Qi within the secret realm and has many benefits. The more iron pieces you have, the more you gain."

"The secret realm is located in a hidden place, concealing itself with the power of heaven and earth. The entrance only appears at fixed times."

"Before this, the secret realm had not yet been opened, so it could not be activated."

"Now that the secret realm is about to open, the aura is leaking out, triggering the iron sheet's induction."

"As long as the host injects spiritual power into it, he can sense the location of the secret realm."

"This secret realm is of great significance to the host. It is recommended that the host go there quickly to avoid missing the day when it opens."

Zhong Qing injected spiritual power into the iron sheet as instructed. Sure enough, a breath that was invisible to the naked eye but could be sensed in the dark emanated from the iron sheet, echoing with a certain location in the far north.

"I see."

Zhong Qing asked again, "System, what exactly is in that secret realm? If it's something valuable to me, then according to what you said, the more iron pieces you get, the more you gain. Why didn't you give me a warning when I approached the second piece of iron in Fuguang Cave?"

Previously at the auction, the system had rarely proactively reminded him to take possession of the fragment, but for this second piece, the system had no reaction at all.

Moreover, he was indeed curious about the origin of this ancient secret realm and what treasures it contained that could even prompt the system.

"For the host, he only needs to pass the iron piece to gain the qualification to enter the secret realm. The second piece of iron is actually not very meaningful."

"As for the opportunities in the secret realm, please explore on your own."

Without much hesitation, Zhong Qing took Hei Bai and prepared to head directly north.

Anyway, there was no clue about Bai Ling for the time being, and he had been planning to continue heading north.

The further north you go in this northern region, the colder it gets.

This secret realm is most likely located somewhere extremely cold.

Therefore, before setting off, he asked Hei Bai to go to the city and fill up his wine gourds.

Of course, for him, the symbolism is greater than the practical significance.

In the world of ice and snow, even though the body is not afraid of cold or heat, the human heart is getting colder and colder in this wind and snow.

Strong liquor may not be able to truly warm people's hearts, but it can at least dispel some of the coldness in their hearts.

Soon, Hei Bai came back with wine gourds all over his body, and the two of them set out on their journey north together.

North of Wushuang City.

Northeast of the southern border of the Northern Territory, more than 100,000 miles away.