Tan Fei was not sure what was going on, but this change was obviously beneficial to him. That mass of energy was bound to the restriction outside the golden city, giving him the opportunity to refine it, use it for his own use, and benefit himself instead of being directly swallowed by the golden city. Speaking of which, the essence plundered from Qin Leng's body is just a drop in the bucket for the golden city. Even if it is completely swallowed, it will not have any effect. On the contrary, it is of great benefit to Tan Fei. After refining it, It can directly improve your cultivation level by a large margin. "Okay! It seems that after a restriction appeared in this giant golden city, it has gradually begun to be controlled by me!" Tan Fei was overjoyed and couldn't help but secretly thought: "However, I don't know how many restrictions there are in this giant golden city. I don't know what level of magic weapon it is and what its function is. Even if this restriction appears, there is no movement after I refine it. It seems that I still have a long way to go before I can fully understand this golden city. Yeah!" After thinking about it, Tan Fei focused his eyes on the mass of energy again. "Okay! Let's not think too much now. Refining this mass of essence is the top priority!" Tan Fei had some free time, and with a movement of his mind, he grabbed the mass of essence and immediately felt an extremely pure feeling. Infuriated. "As expected, it is the essence of that old ghost Qin Leng who has been practicing hard for hundreds of years. Coupled with the purification of the golden city, the aura in it is extremely pure. If I refine this mass of essence, I can still improve it without cultivation and reach the foundation building stage. The fourth level! " Tan Fei's inner calculation immediately activated the true energy, peeled it off, and was involved in the vortex of true energy in the Dantian below, where it was continuously consumed and slowly refined. Although, this mass of essence has been purified by the golden giant city, all remaining impurities have been removed, and it has been refined without any obstacles. But it still took Tan Fei nearly ten days to completely refine it, turn it into true energy, and integrate it into his body. This mass of essence is the essence of Qin Leng's lifelong cultivation. After being refined by him, it made him advance by leaps and bounds. In these ten days, his cultivation level continued to improve. The huge vortex of true energy formed in his Dantian was enough. The foot has doubled in size! ??????????????????????????????????????????????? This is already the limit of the third level of foundation building. The so-called foundation building is to build the Tao foundation and turn the true energy in the body into reality from gaseous state to liquid state. The mercury state is the limit of liquid state. However, although Tan Fei's Qi shone with some mercury luster, it did not really achieve the same texture as mercury. Both in terms of weight and quality, it was far from enough and needed to be carefully polished. "Huh" After completely refining, Tan Fei slowly exhaled a breath of turbid air from his mouth. While feeling happy in his heart, he also secretly sighed: "It seems that the fourth level of foundation building is not as easy as imagined. Now I have Qin There is still no breakthrough in the refining of Leng's essence. It seems to be far from enough, so we can't rush it." However, at this moment, he thought for a moment, and was about to stop the technique, turn his true energy, and incorporate it into his Dantian. But he didn¡¯t expect that suddenly, as if his Qi had reached a certain level, he touched the golden city again. Suddenly, there was a bang! Tan Fei felt as if he was exploding inside his body. His body shook violently, his energy and blood surged up, and he almost spit out a mouthful of blood. "What's going on!" He was shocked and quickly looked inside his Dantian. I saw that the golden city suspended in the dantian, for some unknown reason, the restriction on the periphery suddenly started to surge wildly, spinning like flying, and could not stop. "What's going on! I didn't push it, so why did it start spinning on its own!" Tan Fei was anxious and wanted to stop it. Otherwise, if this continues, the restriction will become faster and faster, and it will oscillate again. You must shock him to death. However, at this moment, no matter how hard he tried, he could not stop the restriction at all. "What should we do? Just let this restriction go wild!" Tan Fei's face was ashen, and cold sweat broke out on his head. At this time, he even smelled a hint of death! "It's over!" Tan Fei yelled in his heart, but he didn't expect that in a twists and turns, suddenly and without warning, the rapidly rotating restriction slowed down, and a force poured out from the golden city. This force was very huge, with a overwhelming momentum, which caught Tan Fei off guard, and he was crushed before he could react. In Tan Fei's dantian, the golden city shrank and suspended above, while below was a vortex formed by his true energy. At this time, that huge force poured down from the golden city, pressing directly on Tan Fei's true energy vortex.Tan Fei's current cultivation level has just reached the third level of Foundation Establishment. Even though Qin Leng's essence has been refined just now, he still has not reached the fourth level of Foundation Establishment. The vortex of true energy in his dantian seems to be very huge, shining with light. Metallic luster, but facing the huge power poured out from the golden city, there was no room for resistance at all. It was as if the mantis was using its arms as a chariot and was crushed directly. " However, this kind of outcome is not a disaster for Tan Fei. After the initial shock, he suddenly realized that this overwhelming force did not break up the vortex of his true energy! The vortex of true energy in the Dantian is the foundation of all cultivators. Once it is broken up, it is equivalent to dissipating the energy. The true energy will fill the meridians and become stagnant water that cannot be activated. However, Tan Fei's situation is actually very special. The power poured out from the golden city, instead of dispersing the vortex of his true energy, formed a powerful squeezing force, compressing from all directions towards the middle, "Hey ? What's going on?" Tan Fei was stunned for a moment, then turned from worry to joy: "Is the purpose of suppressing this power in the golden city to help me compress my energy?" Thinking of this possibility, Tan Fei's eyes changed. I couldn't help but reveal a touch of splendor. This kind of good thing is so rare! The most basic way to evaluate the level of a cultivator is to see whether the Qi is pure! The purer the true energy condensed in the body, the higher the level of cultivation will be, and vice versa is the same. However, if there is no external force, if you want to improve the quality of your true energy, there is no other way but to practice hard and use the skills of water grinding to constantly refine your true energy, remove corruption and retain essence, and purify and refine it. This is inevitable. It's a long process. Because of this, it is inevitable for most people to advance to a higher level every few years or even more than ten years. But Tan Fei¡¯s current situation, under the influence of external forces, has compressed his true energy. If anyone else knew about it, they wouldn¡¯t believe it! This effect can only be achieved if there is a huge gap in cultivation and an expert does not hesitate to help. Even among the Luofu Sect, ordinary inner disciples do not enjoy this kind of treatment. Only those geniuses with extraordinary talents are valued by the elders and even the head of the sect, and are accepted as direct successors and taught alone. Perhaps relying on this method, he could quickly compress and refine his true energy, making rapid progress. Tan Fei didn't understand this, but he felt the pressure of the golden city pouring down, causing his true energy vortex to shake suddenly, and then slowly slow down. Shrink, forcibly compress. The metallic luster of the true energy shrank ten times in size, but the total amount did not change. This made his true energy more condensed, developing in the direction of mercury, and then reached the limit and began to devour each other! Tan Fei did not expect this situation. The Qi in his body all came from the same source. There was no difference at first. But now, with the pressure, they actually differentiated and formed many Qi groups, some large, some small, and some. Strong and weak, and then began to devour each other. Until the end, those thousands of air masses, you eat me, I eat you, the fittest survive, and become one again. At this time, Tan Fei felt his body shake again, as if after this transformation, many changes had taken place in his true energy, filled with a surging power! It even produces traces of something extremely bright and resembling sword energy in the true energy! That is when the true energy has been condensed to the limit, completely turning the emptiness into reality. From the state of business, the Tao is solid, which is the so-called condensation of energy into a gang!