Fantasy: The system takes me to refine the magic formula

The entrance of the Yinfeng Cave was cloudy, and the moment Hongying flew into it, she felt like a fish in water, and at the same time, it seemed that her dantian was calling for something, and she hurriedly flew towards the inside!
And Long Tian worriedly looked at the direction Hongying was going away, then entered the system planting space, and continued to accept the baptism of Lei Jie!
Three days later, Longtian received a message from girl Luoxi that she had left the customs!
"Longtian! Hee hee! Why did you break through again! This breath is so powerful! Is it the middle or late stage of the tribulation?"

"The peak in the mid-term will break through to the later stage at any time! How are you doing? I saw that you have been practicing hard and looking for ways to improve your martial arts! Not bad! You have also broken through!"

"Hmm! I broke through to the middle stage of the Mahayana period. Because I found a way to combine the five elements of explosive techniques, I made some progress in my mentality, so I naturally broke through! But my breakthrough is because of the advanced mentality. You break through, forget it You are a pervert, breakthrough is also normal!"

"Hehe! I found a way to break through, so breakthrough is inevitable!"

"Method? What method?"

"Luoxi, you are also born with a physique of all systems. Although I don't have a martial spirit, I can control any martial spirit element. You still can't tell anyone what I'm going to say next! This method is too dangerous! Only I can help You made a breakthrough!" Long Tian said seriously!

"Okay! Tell me, I'll keep it a secret!"

"I found a kind of spiritual core on this planet, and one of my skills can swallow this kind of spiritual core. I swallowed the spiritual core of three attributes to reach the peak in the middle of the tribulation period! When you retreat I helped Zhang Mian devour a spiritual core, and now this kid is in the late stage of the fusion stage! If he swallows another attribute, this kid must be in the middle stage of the Mahayana stage! Then he will be the same as you!"

"Really! No way! Long Tian! What kind of spiritual core is this! I'll look for it right away. I can't be worse than the next apprentice you accept!"

Self-esteem made Luo Xi secretly compete!
"Don't worry, I've prepared everything for you, but I only collected the elements of the five elements and the element of wind, and the three elements of light, dark and thunder were not found for you!"

"It doesn't matter! I can find it myself! Long Tian, ​​you are so kind! By the way! Where is Hongying! She has a constitution of all yin, what should she do!"

"I just discovered a Yinfeng Cave. It's very strange inside. I asked Hongying to go in and practice. I think it will be rewarding!"

"Oh my God! I thought I would be the first to break through when I left the level, but I was still behind! Long Tian! Quickly absorb a spirit core you mentioned!"

"are you ready?"

"Yes! Hurry up! I'm really in a hurry now!"

"But you just broke through, is it acceptable to absorb the spiritual core again?"

"Don't worry! My breakthrough last time was due to the advancement of my state of mind. It has nothing to do with other things. This time, it will be fine if you help me break through again! At worst, I will also go to the training space you mentioned to exercise!"

"Okay then! Are you ready?"

"Hmm! Ready!"

"Okay! You have devoured different fires before, and different fires can be regarded as a kind of fire-type spiritual core. This time, what I want to devour for you is a water-type spiritual core! Close your eyes, sit down! Then follow my instructions to operate the dantian And Reiki!"

"Yes!"

Long Tian took out a water-type spiritual core, put it in his hand, then circulated the golden nine leaves to wrap it, and then slowly sent it into Luo Xi's dantian. The operation method and sequence were exactly the same as those given to Zhang Mian before!
For a moment, Luo Xi felt that the aura in his body seemed a little irritable!

Long Tian also felt it, it was because Luo Xi had just made a breakthrough, and part of the spiritual energy was not under her control, so this time Long Tian helped Luo Xi break through, Long Tian might need to help Luo Xi sort out the stability of the spiritual energy!
The strong and dense aura of the water-type spiritual core was slowly diluted by Jin Jiuye in Luo Xi's body!

"Run the dantian to reconcile the aura immediately! I will mix a little bit of my breath into your dantian to help you relieve it quickly. You control it, don't reject it!"

"En!" Luo Xi nodded!
The two are working together!

After another half day, Luo Xi finally successfully absorbed the water spirit core, and a terrifying coercion erupted around Luo Xi!
"Boom!" The aura in the planting space scattered and was instantly controlled by the system. Luo Xi had no time to pay attention to other things at the moment, and was frantically circulating the aura around her body and adjusting her state according to Long Tian's instructions!
This time Luo Xi directly broke through from the middle of the Mahayana period to the peak of the late Mahayana period, and it is only a small step away from the tribulation period!

If Luo Xi eats a Po Cheng Pill directly now, Luo Xi can directly break through!

But Long Tian stopped it. If Luo Xi breaks through to the tribulation stage like this, he really can't control his strong aura completely!

A few more hours passed, and Luo Xi managed to adjust her aura state!
"It's good to break through to the peak of the Mahayana period! But your aura is extremely unstable! So, go to practice! Whatever Zhang Mian accepts, I will arrange for you! You must work hard!!"