But among the other three major forces, Lu Changsheng also has to choose one.

After thinking it over, Lu Changsheng decided to join the Heavenly Realm Association.

This is a purely transactional force.

It can be regarded as a trading platform.

The Ascension Ancestor also joined the Heavenly Realm Association back then.

Many precious items were sold or purchased by the Ascension Ancestor through the Heavenly Realm Association.

For example, Great Dao Fragments.

It's said that there is a lot of trading going on within the Heavenly Realm Association.

Lu Changsheng needs to make some big trades to build the reputation of Sky City.

Actually, Lu Changsheng's desire to expand the influence of Sky City conflicts with the Heavenly Realm Association.

Most of the Strongest Ancestors conduct their transactions within the three major forces.

And rarely go elsewhere.

But Lu Changsheng only wants to expand influence, not to replace the three major forces.

He doesn't have that much energy.

Thus, Lu Changsheng briefly explained this to the Breaking Illusion Ancestor, Giant Cauldron Ancestor, and the three Martial Ancestors.

Then, Lu Changsheng left Sky City aboard the Water Mansion.

Of course, Lu Changsheng also left a clone in Sky City.

His clone has the ability of the Red Dust Immortal Dao, and can naturally control Sky City.

This is no different from a Strongest Ancestor controlling Sky City.

Even in the face of the Strongest Ancestor, Sky City would not encounter any problems.

The Vast Realm Sea seems endless.

With no bounds, there is no center.

No one knows where the center is.

But the Heavenly Realm Association claims to be located at the center of the Boundary Sea.

It is said that the founder of the Heavenly Realm Association was once a mighty figure of the Immortal Realm.

That Immortal Realm expert observed the entire Boundary Sea and deduced the center of the Boundary Sea.

Then the headquarters of the Heavenly Realm Association was established at the center of the Boundary Sea.

It is called World Heart City!

Lu Changsheng spent about a year and three months before arriving at World Heart City.

This shows the vastness of the Boundary Sea.

This is despite Sky City not being far from World Heart City.

If the distance were extremely far.

It might take years, even decades, to reach World Heart City.

Of course, during this year of travel, Lu Changsheng did not do nothing.

His clone was stationed in Sky City.

He obtained some Great Dao Fragments, alongside the existing Martial Arts Fragments.

In a year, he increased his aptitude points by about three million.

This efficiency is actually quite high.

Maybe it won't take long for Lu Changsheng's aptitude points not only to recover fully but even to break through to one billion!

Once it reaches one billion, Lu Changsheng's comprehension will transform.

Lu Changsheng's comprehension has not transformed for a long time, and now he is eagerly awaiting its transformation.

"Finally arrived!"

Lu Changsheng put away the Water Mansion.

He saw a magnificent giant city ahead.

Even visible to the naked eye, it was vast and immense.

Larger than a world.

But this is not a world.

It's a city.

A city crafted personally by an Immortal Realm expert!

Rich immortal spirit aura emanated from above, which Lu Changsheng felt clearly.

It's much richer than the Immortal Spirit Qi in Sky City or the Water Mansion.

Even though both are Immortal Treasures, there are certainly differences in quality.

Even combined, the Water Mansion and Sky City are far inferior to World Heart City.

"Whoosh."

Lu Changsheng entered World Heart City.

This is the headquarters of the Heavenly Realm Association, which only allows Strongest Ancestors to join.

However, the most numerous in World Heart City are ordinary Ancestors.

No matter where you are, the number of Strongest Ancestors will not be too many.

World Heart City has to keep operating and can't be all Strongest Ancestors.

Therefore, many ordinary Ancestors come to World Heart City to try their luck, even to conduct business.

After all, Strongest Ancestors leaking a little from their fingertips can make countless ordinary Ancestors wildly excited.

But in World Heart City, the highest status belongs to the Strongest Ancestors.

Lu Changsheng went directly to the headquarters of the Heavenly Realm Association in World Heart City.

"Lord of Sky City, Ascension Ancestor Lu Changsheng, apply to join the Heavenly Realm Association."

Lu Changsheng directly reported his identity.

"Sky City?"

"The previous Sky City owner should be the Ascension Ancestor."

"It seems, perhaps something has happened to the Ascension Ancestor. Not much has been heard about this Ascension Ancestor Lu Changsheng."

Some people looked at Lu Changsheng with curiosity.

What Lu Changsheng did in Sky City did indeed stir many.

But World Heart City is too far from Sky City.

It is normal for news not to reach World Heart City.

But that's not important.

The previous owner of Sky City, the Heavenly Realm Association will not investigate.

As long as Lu Changsheng is a Strongest Ancestor, that's enough.

Moreover, Lu Changsheng indeed did not join the other two major forces, hence qualified to join the Heavenly Realm Association.

"Friend Lu, please come in for testing."

Lu Changsheng nodded and followed behind an Ancestor, arriving at the testing ground of the Heavenly Realm Association headquarters.

The so-called testing ground is actually composed of three Strongest Ancestors.

"A newcomer again?"

"I wonder which friend it is, have we heard of them?"

"The number of Strongest Ancestors born has been decreasing these years..."

"What do you mean decreasing, clearly they were snatched by the Ascension Alliance and the Strongest Holy Hall."

These three Strongest Ancestors seem quite familiar with each other and even started bickering.

"Friends, please test now."

Upon saying this, the three Strongest Ancestors stopped bickering.

"Who will start?"

"Old Chen Ghost, will you start?"

"Forget it, I'm currently comprehending a secret technique, Old Liu Ghost, you start."

The three of them were hesitating.

Lu Changsheng frowned.