In the past few decades, compared to the rapid development of the Yu Clan and other creatures or forces that can enter Time and Space City, the development of Time and Space City itself has fallen into a bottleneck.

Since the invitation to Time and Space City was issued for the first time, there was no level limit, and the luck of the city lord Xiao Yan was a little overwhelmed.

With the help of several powerhouses whose own strength has far exceeded the standard, Time and Space City has carried out a leap forward in the first few years.

At the beginning, with the help of the two super big families of Gai Jiuyou and Ziyin, as well as the entire race of the Yu Clan, they joined.

In a very short period of time, Xiao Yan had scraped together enough 10 billion value points needed to upgrade to the third level of Time and Space City.

After Time and Space City was upgraded to the third level, Xiao Yan, as the city lord, his cultivation was also raised to the level of the first star of the Dou Sect, which had just entered the transcendent third order.

Upgraded to Level 3 Time and Space City, another building has been unlocked and some of Xiao Yan's permissions have been upgraded accordingly, and some new features have appeared.

In addition, after upgrading to level 3, Time and Space City has discovered a new currency unit on the basis of the original value points, that is, spirit points.

The conversion between spirit points and value points is 1:10,000, and if Xiao Yan wants to upgrade Time and Space City to level four, then he will have to spend 100 million spirit points, which is the original one trillion value points.

Moreover, spirit points can be exchanged for value points, but value points cannot be exchanged for spirit points, and only items that have reached the third order in the evaluation of Time and Space City will be purchased by Time and Space City with spirit points.

And after the appearance of the spirit point, some of the more advanced items or some special functions in the time and space city can only be traded using the spirit point.

After the benefits of the first invitation, the subsequent issuance of invitations in Spacetime City will be limited by the level of Spacetime City.

This restriction is not that the number of levels in Time and Space City can issue invitations to the level of beings who have reached what level of cultivation.

Rather, it means that in this world where Time and Space City can issue invitations, there will be no living beings whose cultivation level exceeds the level of Time and Space City.

In other words, the invitation issued after reaching the third level in Time and Space City may enter a world where there may be transcendent third-order lifeforms.

Anyway, the invitation issued by Time and Space City will only appear in worlds where the level of the strong is lower or equal than that of Time and Space City, and it is impossible to surpass the level of Time and Space City.

Even, today's Time and Space City, even if the invitation is issued to the world where there are transcendent third-order beings.

It is unknown which creature in that world can get the invitation, whether it is a transcendent third-order powerhouse or not.

After Xiao Yan issued the first invitation in Time and Space City, it was as if all his luck had been wiped out at once.

Among the thousands of invitations to Time and Space City that were issued in the future, there were only a handful of them that could be issued to worlds with extraordinary third-order powerhouses.

As for the invitations that were directly issued to the hands of the transcendent third-order powerhouses, it was even more slim.

And among the powerhouses invited by Time and Space City in the first batch, those who can bring a lot of value points to Time and Space City.

Except for the fact that they had traded a large number of value points when they first entered Space-Time City, after that, due to their strength, they were too strong for the other creatures in Time-Space City now.

If there are no items that are too suitable for them in the city for the time being, they don't trade much in the city.

And those creatures who can continue to trade within the space-time city, they can bring a small number of spirit points to Xiao Yan, which is far from enough for the huge spirit points that can upgrade the space-time city to the fourth level.

Under the accumulation of various factors, Xiao Yan was not able to upgrade Time and Space City to the fourth level in the past few decades after the initial period of rapid development had passed.

The space-time city that has always been at the third level has caused Xiao Yan a great trouble, that is, his strength can only stay at the peak of the half-saint, the peak of the extraordinary third-order in the evaluation of the time and space city.

Before the space-time layer was upgraded to the fourth level, Xiao Yan could only maintain his current cultivation, and he could not break through to the Dou Sheng-level and reach the transcendent fourth-order in the space-time city rank.

In the backyard of the Xiao family, which is now extremely brilliant, Xiao Yan is holding a little girl of a few years old in his arms, communicating with time and space in his mind.

"Time and space, when do you think I will be able to upgrade Time and Space City to the fourth level!"

Xiao Yan didn't have a reply from time and space in his mind.

Xiao Yan was not surprised by all this, and he continued to speak.

"I said time and space, you are too useless, if it weren't for the Yu Clan's business, I might have upgraded Time and Space City to the fourth level."

"Hey!"

Not surprisingly, there was no reply from time and space in his mind, and Xiao Yan couldn't help but sigh.

At this moment, Xiao Yan suddenly sensed something, put the little daughter in his arms on the ground, and said softly to her.

"Xiao Ran'er, go and play with your mother, father has to deal with some things now."

"Yes, father."

The little girl in Xiao Yan's arms, after being put on the ground by Xiao Yan, answered in a crisp voice and ran away.

Xiao Yan looked at the empty air in front of him, and said with a somewhat surprised expression.

"Old Ancestor, why did you have time to come to me today, I see that you were not busy dealing with the Soul Clan a few days ago?"

After the words fell, a voice came from mid-air in front of Xiao Yan.

"Xiao Yanzi, I came to discuss with you today the matter that I have been busy with all these days."

"Then the old ancestor, please come into the house and talk about it."

After Xiao Yan signaled, a figure suddenly appeared beside him and entered the room in front of him with him.

Back then, after the Yu Clan entered Time and Space City, Xiao Yan thought that he would be able to make a lot of value points with the Yu Clan, the race of the Tianyuan Saint Realm.

However, to the surprise of both Xiao Yan and the Yu Clan, the Yu Clan could not bring out any resources from the Tian Yuan Realm, and could only trade some exercises and cheats or cultivation comprehension things to Time and Space City.

In addition, no living beings in the Time and Space City except the Yu Clan could enter the Tian Yuan Sacred Realm, and the Yu Clan could only carry various resources into the Tian Yuan Holy Realm.

Over the years, the Feather Clan has only one way to earn value points steadily, and that is to send a large number of Feather Clan warriors to receive tasks in Time and Space City, and exchange them for value points by going to the heavens and all worlds to complete various tasks.

If it weren't for these limitations, the development speed of the Feather Clan over the years would probably have become even faster, even if the Orc Clan successfully established the Hundred Clans Alliance, I am afraid it would not necessarily be the opponent of the Feather Clan.

At that time, the reply given to Xiao Yan by time and space was that because the Tian Yuan Saint Realm was too powerful and was blocked by the rules of the world, the Yu Clan could not take any items in the Tian Yuan Saint Realm away from Tian Yuan to upgrade.

Similarly, because the Tian Yuan Sacred Realm was too powerful, under the obstruction of the rules of the Tian Yuan Holy Realm, Time and Space City could not forcibly break the rules of the Tian Yuan Holy Realm and send the creatures from the Heavens and Ten Thousand Realms in Time and Space City into the Tian Yuan Holy Realm.