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Because the Tiankeng secret realm is only opened once every hundred years.

Every time, more than ten years before the secret realm of Tiankeng is about to open, Xuanjian Sect will ask the master of weapon refining to build a spirit boat.

After the spirit boat was built, the Xuanjian Sect's talents took it back and slowly used the sealing technique to seal the spirit boat, and then let the Xuanjian Sect's disciples take it into the secret realm of the Tiankeng.

The sloppy old man is not an exception. Most of the powerful people on the Fairy and Demon Continent do not carry magic weapons that can fly long distances with them.

"A seventh-grade storage magic weapon?"

Ling Feng was stunned for a moment. The most expensive storage magic weapon he had on him now was the storage belt he had snatched from Luo Yungong from the outer sect of Xuanjian Sect.

The storage belt snatched from Luo Yunchong is a very powerful storage magic weapon. It has reached the third level and can hold hundreds of cubic meters of things.

So Ling Feng has been using it.

The level of storage magic weapons is divided according to the internal space.

For first-class storage magic weapons, the storage space is generally only single digits, that is, less than ten cubic meters.

A second-grade storage magic weapon with double-digit storage space.

A third-grade storage magic weapon with three-digit storage space.

By analogy, the storage space of a seventh-grade storage magic weapon reaches seven figures, at least one million cubic meters.

On the Immortal and Demonic Continent, there are very few high-end storage magic weapons. Even those true monarchs and even Tao Master-level powerhouses use only fourth-grade storage magic weapons.

Because storage magic weapons are more difficult to refine than other magic weapons, only the fifth-grade storage magic weapons are qualified to be used by those powerful figures in the central sect.

As for space magic weapons above the fifth level, they are almost rare.

"I wonder what kind of storage magic weapon my image stone is?"

Ling Feng subconsciously looked at the palm of his left hand.

The shadow stone left by the Wuji Sect Master for him, the space of the main hall containing the spiritual stone alone is no less than 10,000 cubic meters.

Ten thousand cubic meters is at least a fifth-grade storage magic weapon.

What's even more amazing is that the space of this shadow stone can also accommodate living people.

Ling Feng suddenly wanted to ask the sloppy old man to verify the grade of the image stone, but he resisted. He knew that the image stone was his secret, and he must not tell the sloppy old man.

Because even so far, Ling Feng is still hostile to the sloppy old man.

Ling Feng knew that the relationship between the sloppy old man and him was a relationship of use. To put it harshly, he was the sloppy old man's test subject, equivalent to a guinea pig.

Therefore, he cannot let the sloppy old man know all his secrets.

He wants to hide some tricks and have a showdown with the sloppy old man when the time comes!

He didn't want to live under the control of a sloppy old man for the rest of his life. This feeling was too unpleasant.

Ling Feng's current short-term goal is to rescue his father, then find his mother, and finally find a way to get rid of the sloppy old man's control over him.

One day later, Ling Feng followed the sloppy old man to Thunder Fire City.

Thunder Fire City is the largest city within the Thunder Fire Sect, with a population of over 30 million.

In the sky above Thunder Fire City, there are many suspended islands. There are huge iron chains connecting those islands, and some islands are connected by ladders formed by rectangular stone slabs.

Those islands are hidden among the clouds and mist, sometimes appearing and sometimes disappearing.

The largest island is more than ten miles in diameter, with mountains, rivers and spiritual fields on it.

The peaks on the island are as steep as swords. The silver-white waterfall falls from the top of the peak, making a roaring sound. A large amount of water mist disperses in the air, forming a colorful rainbow under the reflection of the sun.

.

A large group of cranes lined up and flew under the colorful rainbow.

In the sky, Ling Feng would occasionally see huge war boats rising from Thunder Fire City and flying in all directions.

Thunder Fire City is the transportation hub of Thunder Fire Sect. There are various war boats leading to the Southern Territory and even the Central Territory.

"What a big city!"

Ling Feng was also shocked by the Thunder Fire City in front of him.

The strength of Xuanjian Sect and Thunder Fire Sect are not much different, and they also have a super city that is comparable in size to Thunder Fire City. This city is called Shuangjian City.

Although Ling Feng is an inner disciple of Xuanjian Sect, he has never been to Shuangjian City.

This is no wonder Ling Feng, since he came to Xuanjian Sect, he has been training hard and has no free time at all.

The most leisurely period of time was when he had just returned from Qingjian City in the Black Dragon Mountains. At that time, he had just broken through to the sixth level of foundation building, so he used this period of time to return to Yuyang City.

After leaving Yuyang City, he went directly to the Demon Flame Valley, and then to the Tiankeng Secret Realm.

After condensing the golden elixir in the Tiankeng secret realm, he prepared to go to Ti Zong to practice.

But what he didn't expect was that on the way to Ti Zong, such an accident occurred. Fortunately, he did not lose his life.

Half an hour later, the sloppy old man and Ling Feng boarded a war boat heading to Spark City.

The Thunder Fire Sect is mainly controlled by Han Jun's family, the Han family, and Xu Fei's family, the Xu family.

In terms of strength, the Han family can be compared with the Qu family and Fang family of Qingyun Peak.

The Thunder Fire Sect has two major families, while the Xuanjian Sect has four major families.

But the strength of Thunder Fire Sect is equal to that of Xuanjian Sect.

The area bordering the Flame Mountain Range is under the jurisdiction of the Han family, because the people of the Han family practice the Thunder Fire Sect's inherited technique "Secret Book of Heavenly Fire".

The place in the Flame Mountains is simply a holy land for training to the people of the Han family.

And at the western end of the Flame Mountains, there are people from the Tianhe Sect.

The Flame Mountain Range is just a branch of the Tiandu Mountain Range.

The Tianhe Sect has been competing with the Thunder Fire Sect for control of the Flame Mountains. The two sides have been fighting in the Flame Mountains for thousands of years, but there is still no winner.

Although Tianhe Sect is stronger than Thunder Fire Sect, he cannot concentrate all his power to deal with Thunder Fire Sect because Xuanjian Sect is restraining him.

Spark City is the largest city of the Han family near the Flame Mountains, with a population of over one million.

Spark City is generally a forward outpost where Han family disciples often practice.

Even if you take a sky boat, it will take three days to reach Spark City from Thunder Fire City, because the two cities are one hundred thousand miles apart.

This is under the premise that the war boat that Ling Feng and the others are riding is relatively fast. If the war boat is of normal speed, it will take at least ten days to arrive.

After arriving at Spark City, the sloppy old man took Ling Feng and flew directly towards the depths of the Flame Mountains.

Half an hour later, they had penetrated hundreds of miles into the Flame Mountains. Below them was a sea of ​​fire, with large amounts of magma constantly erupting from cracks in the ground.

The air is filled with a pungent smell.

"call!"
Chapter completed!