It was night, the sky was dotted with stars, the summer breeze blew the window paper, and there was a rustling sound.

The white-clothed young man sitting at the head of the bed opened his eyes, and his immature face flashed with unconcealable ecstasy. In the past few days, the soul has frantically absorbed the yellow gas emitted from the golden book, and at the same time as the soul has grown, something has happened that has surprised Tang Feng. Tang Feng found that he was able to use his mind to trigger the purple fire!

"Whew!" Under the guidance of Tang Feng's thoughts, the purple fire rushed out from the fingertips along the tendons, and the flames burned "whirring" on the fingertips, making a slight popping sound.

"Wonderful!" Tang Feng looked at the burning purple fire in his hand, and the excitement in his heart couldn't be calmed down. Tang Feng felt that although the purple fire was burning endlessly at the tips of his fingers, there was no burning sensation. While the purple fire was radiating heat, it seemed to be still emitting a white cold.

"It's really a strange thing where ice and fire coexist!" Tang Feng really couldn't figure out how there could be such a strange thing in this world. I don't know if it's aggressive!

Tang Feng wanted to verify the power of the purple fire again, so he found a piece of scrap iron and controlled the purple fire to spread quickly towards the scrap iron.

"Whew!" Tang Feng only thought about doing his best to melt the scrap iron, and as expected, as soon as the purple fire stained the iron, the iron was melted in the blink of an eye, and the red hot molten iron fell to the ground drop by drop. Tang Feng's face changed, and he took back the purple fire, for fear that the molten iron would splash and endanger himself.

"Hmm, the surface of the molten iron solidified on the ground actually has a thick layer of ice!" Tang Feng casually glanced at the solidified molten iron on the ground, and saw layers of ice wrapped on it.

"Click!" In a moment, a slight crack appeared on the surface of the solidified iron, and finally with a click, it all cracked, leaving behind a pile of uneven and broken iron.

"This cold can freeze and crack iron pieces!"

The scene in front of him shook Tang Feng fiercely. The power of this purple fire incineration is not only amazing, but the cold hidden in it is also terrifying. If this purple fire is contaminated with a living human body, then neither the scorching heat of the purple fire nor the cold of the cold air can withstand by an ordinary person!

"It's no wonder that the black-clothed leader will be burned into such a miserable image by the purple fire!"

Tang Feng finally understood the reason why the black-clothed leader who was almost close to the five-star strength in the mine couldn't resist the purple flames.

"It seems that even if you meet a four-star powerhouse in the future, you will have the strength to fight!" Tang Feng grinned, and his heart was ecstatic.

Tang Feng came back to his senses and made a decision to cultivate his cultivation, wanting to continue to cultivate his battle qi and strive to break through to the strength of the fourth star. At this moment, the golden book in his head suddenly shook violently, and a burst of golden light burst out from above.

"Ahh "Could it be that I triggered the purple fire and violated the Golden Book!" Tang Feng broke out in a cold sweat, although Tang Feng had received a lot of benefits from the Golden Book recently, but this did not mean that the Golden Book was no longer a threat to himself! In fact, Tang Feng had always been jealous of the Golden Book.

"Are you going to die? Tang Feng thought wildly, but the imaginary disaster did not happen. I saw a series of messages erupt in the golden book!

"The Book of Alchemy, the essence of cosmic alchemy, the classic book of underworld cultivation. The body, marrow, tendons, qi, and soul derive all things and penetrate the way of heaven. The law, the source of all things. The law of love, the law of survival, the law of martial arts, the law of the underworld, the law of nature...... The Infinite Law creates the universe and achieves the main god! medicinal properties, the source of energy. Refining, with the heart of fire as the guide, the foundation of refining medicine ........."

A series of obscure information penetrated into Tang Feng's mind like a wild beast, and the huge amount of information stimulated Tang Feng's soul fiercely, Tang Feng's eyes bulged out of his sockets, and beads of sweat the size of beans were dripping down, passively accepting the series of knowledge about alchemy.

"Ahh

Tang Feng felt that his entire soul was about to be defeated by that huge alchemy information, and finally he couldn't hold on, and with a miserable scream, he fainted.

The white-clothed young man who fell on the bed was purple and red, and the purple fire flashed out of his head, jumping between the young man's eyebrows. At this moment, the young man's body was once again tempered by the purple fire.

When Tang Feng woke up again, there was already a faint light outside the window. The clouds in the east are white and red, and the red sun like a giant wheel emerges.

Tang Feng felt his head groggy, like a ball of kapok that had been forcibly stuffed into it overnight. At this time, he had a lot of knowledge and principles about alchemy in his head.

Ignoring these messy memories, Tang Feng's mind began to feel the sea of qi, and Tang Feng was surprised to find that he had actually touched the four-star barrier!

It seems that under the washing of the purple fire, the muscles, bones, and veins of his body are not only becoming stronger at an astonishing rate, but the speed of cultivation is also increasing exponentially!

Tang Feng twisted his body, and the sound of "crackling" bones rubbing sounded. "It seems that after cultivating for a period of time, you can break through to the strength of the four-star. ”

After coming back to his senses, Tang Feng had time to sort out the messy information in his mind.

"Pulp Cleansing Pill - the second grade of the pill, the effect can wash away the accumulation of blocked tendons and veins, and help cultivators increase the speed of absorbing and refining battle qi!"

"Refining the body pill - the second grade of the pill, the effect is to remove the debris in the muscles and blood vessels, and strengthen the physique!"

"Lingquan Pill - Three Grades of Pill. Melt it into hot water for cultivators to soak in cultivation, which can intensify cultivators to break through to the next level!"

Tang Feng fished out these three useful prescriptions from his messy memories, all of which contained the medicinal materials needed to refine these three pills.

"Can I really refine the elixir?" Tang Feng felt incredible. It seems that only a strong person who cultivates the underworld can refine the elixir, and it is difficult for him to be able to cultivate both in the underworld!

Tang Feng read the classics and also knew that on the Tian Yuan Continent, in addition to cultivating the Battle Dao, cultivators also had a kind of cultivation of the Underworld Dao. These underworld powerhouses advanced by absorbing the spiritual energy between heaven and earth, and they were not only able to cultivate various underworld methods, but also able to refine pills for various purposes.

Generally, the cultivation of the underworld path requires an innate cultivation physique, and only among the ten thousand people on the Tianyuan Continent will there be a physique that cultivates the underworld.

Therefore, the cultivators of the Underworld Dao were extremely rare in the Tian Yuan Continent, and they were able to refine the elixir that was extremely useful to the combatants, so they were also treated favorably by the various countries of the Tian Yuan Continent, and their status was extremely lofty.

"This golden book has given me a lot of surprises!" Tang Feng didn't believe that he could refine the pill, but the series of surprises brought to him by the golden book in his mind made Tang Feng have an urge to try.

"If you try it, you won't lose a piece of meat, if you can really refine these three pills, when the time comes, you will not only be able to quickly break through to the strength of the four stars, but also help Tang Can recover his cultivation talent, and even help the sixth uncle Tang Lie break through to the strength of the six stars!" Tang Feng thought about it, and his heart was crossed, planning to try to refine these three pills.

After sorting out the knowledge of alchemy in his mind again, Tang Feng knew that in addition to buying the medicinal materials of these three pills, he also needed a pill furnace. As for the fire used in alchemy, the knowledge of alchemy in Tang Feng's mind told him that purple fire was the best choice.

"However, where do you get these medicinal materials right now?" Tang Feng fell into deep thought, "Where did you borrow money from the sixth uncle and go to the major pharmacy to buy it?" Tang Feng shook his head, it is best not to expose the matter of refining the pill by himself, otherwise I am afraid that it will cause a sensation!

Once such a shocking thing as the Underworld War Double Cultivation is exposed, not to mention that Tang Xiong can't tolerate himself, it may even attract the attention of the royal family of the Great Yan Dynasty at that time!

Tang Feng thought about it carefully, and for a moment, a trace of helplessness flashed on his face, and he smiled bitterly in his heart: "It seems that I can only go to Tang Ziying's girl." ”

Tang Ziying's father, Tang Kongxuan, the fourth elder of the Tang family, is in control of the Tang family's medicinal materials, and it shouldn't be difficult to find her to get some medicinal materials.

"Although Tang Ziying's girl and I have had some festivals, her temperament is extremely kind, and she should keep it a secret for me. Besides, the knot that the two formed ten years ago should be untied by a big man like Tang Feng. ”

Tang Feng thought about it, and suddenly felt a trace of regret in his heart. At first, he was young and ignorant. When he was six years old, his father pointed to Tang Qian'er and Tang Ziying, the two watery girls, and asked him to choose one of them, but he was somehow blind at that time and chose Tang Qian'er!

Later, when people grew up, Tang Feng found out who he really liked. However, his marriage contract with Tang Qianer will always be a knot between the two, and it is difficult to let go.

"That's it, how long will a big man like me hide! Now that I'm so down, I guess Tang Ziying doesn't care about anything with me anymore. ”

After finalizing everything, Tang Feng began to act. Early in the morning, he couldn't wait to borrow Tang Lie's special carrier pigeon, and after carrying the letter about meeting Tang Ziying, he said hello to Tang Lie and went down the mountain.

"Boom"

In the front yard of the Tang family's mansion, a gray carrier pigeon fluttered its wings and landed on the windowsill. A maid with two ponytails ran over and grabbed the carrier pigeon, took off the letter paper and shouted to a purple-clothed girl on the dresser: "Miss, there is a letter." ”

The girl in purple dressed up casually and was about to go out. Seeing the maid Cui'er handing over a volume of letters, Dai Mei frowned slightly, and opened the letter in confusion.

"Cousin Ziying, I want to meet you under the pear tree at the back door of the Tang family's mansion today, I need your help with some things, I hope you can come. -- Tang Feng. ”

The smart eyes looked at the word Tang Feng on the letter, Tang Ziying's delicate body trembled slightly, and her beautiful face was stained with a trace of crimson at some point.

"You've finally put down the shelf. Tang Ziying smiled, with a little shyness on her cheeks, and called to the maid behind her: "Cui'er, go and get me rouge." ”