Fantasy: The system takes me to refine the magic formula

After Long Tian entered the realm of the Heavenly Demon Altar, he didn't go directly to the center of the realm, but quietly hid in one place, observing the surrounding environment!
Although the magic energy is dense and pitch black, Longtian's primordial spirit can still see everything around him clearly!
At this moment, the city is already a hellish scene, there is no living person, all are demonized practitioners and monsters!

There are many cultivators who are in the stage of transforming gods, or even in the stage of merging, and they are also demonized. The skin of these people has begun to rot, and they have no strength to speak of, and they walk on the street loosely, but Once these people receive the instructions from above, they will enter the state of zombies like crazy and start fighting, and the demonized human cultivators will retain all the martial arts they have learned during their lifetime, even martial arts, but they My mind, brain and body have already been completely demonized and controlled!

Long Tian looked at these people a little pitifully, but he didn't feel too much emotion!

In the world of cultivators, survival of the fittest!
Long Tian hid himself in the Heavenly Demon Altar, quietly walked towards the central hall, and at the same time counted the number of demonized cultivators and monsters!
The palace of the headquarters of the Demon Sect is dressed in hell. The main hall building is located in the middle of the Heavenly Demon Altar, and there is a black gas erupting faintly from it!

Long Tian walked to the front of the main hall and saw bones everywhere, some were human, many were monsters, and there were even some whose names Long Tian couldn't name!

"System, what is this group of bones?"

"It's the bone of a bone pterosaur! These bones can become a soulless killing machine during a battle! When facing these things, you must smash them with one blow! Otherwise, it will be endless! Very annoying! "

"But this number is too huge!"

"Of course! It seems that the demons are fully prepared to march to the Tianwu Continent this time! But it's not right! The Tianwu Continent is just a small planet. This interface requires aura without aura, and requires magic energy without magic energy. The resources are not rich enough, why did the Demon Realm attack the Lower Realm?"

"Hehe, use war to support war, expand your base camp, and then they will fight against the other five realms, won't it be easier to fight!"

"What you said makes sense, let's go in first! Note that there is an existence who has passed the tribulation stage, and there are seven masters who have passed the tribulation stage! They are all closing their eyes and seem to be absorbing magic energy!"

"What! Existence beyond the Transitional Tribulation Period? How could it appear in the lower realm? How can we fight here? Humans don't have any masters who can fight against Transitional Tribulation Periods?"

"Whoever said no, you are right! Hehe! You can suck him dry!"

"Damn it! System, please don't use this kind of words to describe it, it's kind of dirty! And I'm a man! How can you suck it up!"

"Drain him with your leaves!"

"Shut up Laozi!"

"Hahahaha!" Long Tian ignored the system, and then set out to enter the headquarters hall of the Heavenly Demon Altar!
Since the system has already reminded him that there is an existence that has passed the tribulation period, and Long Tian is not sure whether his secret magic weapon can completely hide himself, then he should not provoke the other party at all. If you are discovered, you may not be able to escape!
And Long Tian's purpose is to secretly find the legendary gate of another world, and then absorb the magic energy. Of course, there are also a lot of magic energy outside, but in this realm of the magic altar, if Long Tian starts to absorb the magic energy, I don't know if it will will be found out!It's better to directly find the place where the magic energy is released, and then absorb the released magic energy. In this way, as long as it is not completely absorbed, it should be absorbed bit by bit, and it should not be discovered!
The main hall occupies a huge area, and the interior extends in all directions. There are empty rooms everywhere, like a maze. Long Tian is a little speechless. This shouldn't be a place where people lived before, right?But who will live in the maze! ?

"System, show me the direction, I can't find it! It's too messy here! I'm worried that I will suddenly bump into the existence you mentioned that transcends the tribulation period!"

"Don't be afraid! In the upper realm, the existence beyond the Tribulation Transcendence Stage is also at the bottom, which is equivalent to a fairy in the fairyland!"

"Heavenly Wonderland?"

"Well! The fairyland also has corresponding levels, just like the world of cultivators, except that there are eight levels in the fairyland! There are nine here! Including the other upper five worlds, there are also eight levels, and this fairyland is ranked last. Two! The bottom one is the Earth Fairyland, which is equivalent to the peak level of your human beings during the tribulation period!"

"There are also cultivators in the immortal world who have passed the tribulation period?"

"Host! You are asking too many questions. You are still many years away from ascension. You don't need to worry about the upper realm. Don't you want to go to the gate of the other world of the Demon Sect? Go forward 30 meters, turn right first, and then turn left Then walk ten meters ahead!"

Following the prompts of the system, Long Tian walked up and down quietly, walking around, turning his head until he felt dizzy, and finally came to the location where the legendary gate of the magic gate is located!

"System, are you sure, this is the legendary gate of the Demon Gate?"

"I'm sure!"

"Ah... are you sure, this round mirror with a diameter of less than 2 meters in front of you is the source of the disaster that plagues the mainland every 5000 years, the gate of the demon gate?"

"Sure! Didn't you feel the terrifying devilish energy emanating from here?"

"I feel it! It's just that I can't believe it! I always thought that the gate to another world in the magic gate would be a huge scary forest or something else! I didn't expect it to be a mirror! This is too... ...What a fool!"