Disciple, you are invincible, go down the mountain and harm your fiancée.

When refining the fourth dragon vein, Li Daofeng discovered that it took twice as long as before, and the mana used was several times more than before.

"Huh... It's the fourth time of refining. It's really not easy! As expected, the further you go, the harder it is to refine! It's only the fourth section, and it takes so much effort to refine it. How long will it take to refine this entire dragon vein?"

Li Daofeng held onto his Yuan and guarded his Oneness, channeling the power he had just gained from refining the dragon veins once again! After refining the dragon veins three times in a row, he felt like his body was about to burst.

He felt like his body was a balloon, filled with gas and ready to explode at any time.

He held the Yuan and Shou Yi and began to practice the technique, guiding the powerful aura in his body, slowly merging it into his magic power and making it become a part of his magic power.

This process lasted for nearly an hour for Li Daofeng! This was while he was refining in the Yin-Yang Heaven and Earth on the ninth floor of the Yin-Yang Tower.

The difference between the time in the Yin-Yang world and the time outside is one hundred to one, which means that one hour inside is several days outside.

In other words, it took Li Daofeng several days to refine the power obtained from refining three sections of dragon veins.

"Huh... It's really not easy. Even refining mana is so difficult! This is only the fourth section. I guess it will become more and more difficult to refine it later."

Li Daofeng let out a long breath, feeling the changes in his body.

After refining the four dragon veins, he found that his mana had changed again! The color of the released mana changed from the previous bluish-white to blue!

As his magic power was running, there were actually shadows of green dragons swimming in his meridians! It was very magical and strange.

When he used his supernatural power, there was also the sound of a dragon's roar, especially the shadow of the green dragon on his left, which was more condensed than before. In a trance, it seemed like a real green dragon, hovering on his left side.

The shadow of the Azure Dragon had become more than twice as large as before. The huge dragon body was hundreds of meters long, majestic and domineering. The terrifying dragon power carried by the dragon body gave people endless oppression.

Li Daofeng clearly felt that the same attack was now much more powerful than before. With the same attack, he felt that he could beat ten people now.

"This dragon vein is indeed not simple! If we refine it completely, it may not be a rumor that we can dominate the world! Continue..."

Li Daofeng, feeling the benefits, was like a chicken with its blood injected. His consciousness began to search for the escaped dragon vein in his body again.

The dragon vein might have been scared by Li Daofeng's sucking. Who could handle such a great thing? He refined four sections of the dragon vein at once. It would be strange if the dragon vein was not scared.

"Hide...where can you hide? Come on, get into the bowl..." Li Daofeng screamed as he found the dragon vein and started to work right away.

This time he was even simpler and more brutal. He directly outputted a large amount of mana and began to refine!

“Huh… I finally refined it. It took me so long to refine it this time. It really gets more and more difficult as time goes by. I guess with my current level of cultivation, I can only refine it once at most!”

"continue……"

Almost a whole day passed before Li Daofeng finally refined the sixth section of the dragon vein!

"Come on..."

Li Daofeng was not convinced. After finding the dragon vein, he continued to refine the seventh section of the dragon vein!

But this time he found that no matter how hard he tried, no matter what method he used, even after using all his magic power for several hours, the dragon vein showed no sign of being refined.

"Fuck... I just don't believe it. I can't beat you, come on..." Li Daofeng was not convinced and his stubborn temper came up, so he continued to fight.

After a few more hours, the seventh section of the dragon vein was still motionless, with no sign of being refined. Instead, Li Daofeng was exhausted like a dog, panting heavily.

"Shit... I can't do it anymore... If I keep practicing, I'll be exhausted to death if I can't refine this dragon vein! It seems that I have really reached my limit. There is no point in continuing the stalemate!"

"Forget it! If you can't do it, just give up!"

Li Daofeng finally accepted his fate and stopped insisting. After several hours of useless efforts, Li Daofeng had to give up.

After a short rest, Li Daofeng began to rest again, channeling the power of the dragon veins in his body. This process took several more hours.

After a few hours, Li Daofeng finished his work. He channeled all his magical power into his dantian, exhaled a breath, and finished his work!

He was originally thinking about refining the Black Tortoise Spirit, but then he thought that it would take a long time for him to be in seclusion this time, and Third Senior Sister Yin Wushuang was about to give birth! He couldn't delay any longer. He had to go out and take a look.

Thinking of this, Li Daofeng’s consciousness returned to his body!

"It's a wonderful feeling! My skills have improved a lot this time, and it should be much better than before! I wonder what level I am in compared to those people in the higher planes?"

Thinking this, Li Daofeng stood up and walked outside.

"You bastard! You still remember to come out! You have been in seclusion for three to five days without saying a word. Do you still have us, your senior sisters and your wife, in your eyes?"

"You just came back and you're going to disappear for the whole night, right? Didn't I punish you, so you're itching to get away with it again?"

As soon as Li Daofeng stepped out of the door of the secret room in the basement, his ears were grabbed by Second Senior Sister Yun Xian'er. Then she scolded him in the face.

“Ah… Second Senior Sister… let go… let go… it hurts… it hurts, Second Senior Sister… let go…” Li Daofeng grimaced in pain.

"It hurts... now you feel it hurts! I told you not to be disobedient and run away without saying a word. Now you feel it hurts. Do you think I will pull your ears off... let's see if you dare to do it again in the future!" Yun Xian'er said with a smile and scolded.

"I dare not... I dare not... I will never dare to do it again, Second Senior Sister, please let go! I know I was wrong, I will never dare to do it again, I was wrong! Please, Second Senior Sister, let me go..." Li Daofeng screamed like a pig being slaughtered.

“Second sister, please be gentle, don’t hurt him! Look, your junior brother’s ears have turned red! Let go…” said the eighth senior sister Shang Wanqiu with concern.

"Tsk! You dead girl, now you know how to feel sorry for men! Get away from me, with this little bastard's physical strength, you may not be able to cut off his ears even with a knife! You can pull them off in one go like this!" Yun Xian'er scolded with a smile.

"What's wrong with me feeling distressed? He's my man, how can I not feel distressed! Don't you feel distressed? If you don't feel distressed, then just pull hard wherever you feel distressed! Look how badly you've pulled your junior brother, who wouldn't feel distressed!" Shang Wanqiu said with a pout.

"Okay! I'll beat you to death, you shameless girl, for you can say such shameless words! Do you still have any shame..." Yun Xian'er laughed and scolded, then let go of Li Daofeng and chased after Shang Wanqiu.

"Ah... Second Senior Sister is going crazy, help me..."