Yu Qingqian and Feng Chen became interested after hearing the introduction of Sky City.

   "Are there any other restrictions except for those who are spiritual saints to enter?" Yu Qingqian felt that it shouldn't be that simple, otherwise, not only spiritual saints can go in to hunt for treasures.

   Jiao Bai smiled and said: "Sky City will be opened every ten thousand years, and 6,600 sky orders will be randomly sent to the worlds of many different interfaces. I happened to be lucky enough to get one."

He paused and continued: "A sky order can bring six people into it, in addition to the initiator itself. In addition to the six of us, I also invited Lu Shen, but he still needs to deal with some affairs in the two-domain battlefield. , and can join us in a year."

  Yu Qingqian nodded: "So that's the case, do the upper three realms and the lower four realms belong to the same heterotopic interface?"

"Of course it belongs to the same heterotopic interface. In addition, there are multiple heterotopic interfaces of different levels and sizes, but it is very difficult to go to other heterotopic interfaces. Not only will it be restricted and excluded by the laws of nature, but also Will be attacked by aliens."

   "If someone who has merged with the heart of the secret realm and cultivated a clone, it will be much easier to go to the alien interface, as long as you pay a certain price to save it." Jiao Bai explained.

   Gongsun Yan was also very interested in Sky City, "I heard that many of the relics and treasures in Sky City are protected by strong plant patterns. I wonder if it's true?"

   "It's true, so most of the companions invited by the activator of the sky order will be very powerful planting masters." Jiao Bai said bluntly.

"That's great. My level of planting has reached a bottleneck. As long as I get more exposure to some difficult planting restrictions, I should be able to break through that bottleneck and reach the limit of the lower four realms." The smile in Gongsun Yan's eyes deep.

   Although Liao Qian is not as obsessed with planting patterns as Gongsun Yan, he is also a person who pursues perfection and is also very interested in Sky City and prohibition.

   "It is thanks to fellow Daoist Jiao that we can enter Sky City in a year."

   Jiao Bai laughed and said, "What do you say thank you or not, if we didn't have the master-level planting masters like you, we wouldn't be able to gain anything even if we entered Sky City."

  The relatively good ruins of Sky City will be surrounded by very deep planting prohibitions. If there is no planting master to follow, it will be a problem to survive.

"Uncle Jiao, your former cultivation base has surpassed that of the Spirit Emperor. It shouldn't be too difficult to restore it. Are there many treasures in Sky City that can be used in the upper three realms?" No one is considered a person with deep scheming, so he asked straight to the point.

Jiao Bai's eyes showed admiration: "The little girl is really smart, and the heterotopic interface where Sky City is located once was as brilliant as the upper three realms. Under the staggered changes of time and space for hundreds of millions of years, many high-level ruins and medium-low level Relic treasures occasionally merge."

   "As long as we are fortunate enough to meet one, the things we find will be very high-level, and will definitely have an immeasurable impact and good fortune on our future, so Fang Xiaozi and I want to go in and give it a try."

   Otherwise, there is no need for them to go to Sky City for adventure. After all, they have previous experience, and it is only a matter of time before they break through the Spirit Emperor.

   But once they are lucky enough to encounter the relics that occasionally merged in Sky City, they will definitely go further after returning to the Upper Three Realms.