Ye Tianyan had already left with the two Immortal Emperor late-stage powerhouses in the Sky Immortal Court, and Xiao Nan's cultivation could not be improved well for a while, and his first priority at this moment was to upgrade the Sky Breaking Shuttle from a top-grade immortal weapon to an artifact.

Finding a secluded hut, Xiao Nan summoned Duoduo out, and at the same time sacrificed the Sky Breaker, took out the Nine Palace Feathers, and prepared to start upgrading the Sky Breaker.

"Uncle Villain, you haven't given Duoduo anything to eat for a long time, Duoduo is going to starve to death. As soon as Duoduo came out, he complained to Xiao Nan.

"What kind of bad uncle? I said that I should call you a good brother, or I won't give you anything to eat. Xiao Nan said speechlessly.

"If you give me something to eat first, I'll call you a good brother, otherwise you're still a bad uncle, don't think Duoduo is so easy to deceive, Duoduo is smart." Duoduo said proudly.

Xiao Nan couldn't help but be very helpless, and hurriedly looked for the fire spar in a corner of the small world. However, what shocked him was that the pile of fire crystals that was originally as high as a mountain was now only the size of a basin.

After thinking about it, Xiao Nan still grabbed a handful of fire crystals and threw them to Duo Duo very painfully, but he was secretly thinking in his heart, it seems that he will have to find fire crystal ore in the fairy world in the future, otherwise if there is no fire crystal one day, he dare not guarantee that Duo Duo will not rebel.

Duoduo devoured all the fire crystals, and still didn't seem to be satisfied, he looked at Xiao Nan with blank eyes, and said, "Duoduo still wants to eat, good brother, you are giving me something to eat." ”

"You foodie, why do you think about eating all day long!" Xiao Nan couldn't help but feel a little big.

"Brother good guy called me out because he wanted me to play with you? If I don't eat, I won't have the strength, and if I don't have the strength, how can I play with you? Brother good guy, do you say yes?" said Duoduo confidently.

"You say yes, yes. Xiao Nan suddenly had the urge to vomit blood, but he still grabbed another handful of fire crystals and threw them to Duoduo.

Duoduo devoured the fire crystal given by Xiao Nan again, and then became satisfied and promised to help Xiao Nan upgrade the Sky Breaker.

Xiao Nan observed the structure of the Broken Sky Shuttle for a while, and then picked up the Nine Palace Feathers and looked at them carefully, which made the flowers burn at the bottom of the Broken Sky Shuttle, and deduced the seal recipe required for the upgrade of the Sky Breaking Shuttle, and played out the seal formula, so that the Nine Palace Ling Feather melted into the Sky Breaking Shuttle, and then continued to refine and upgrade.

If you want to refine such a complex flying magic weapon as the Sky Breaker, it is naturally not simple, if it is only Xiao Nan alone, I am afraid that even if he has enough materials, he will definitely have to refine it for several months.

Upgrading the Sky Breaker is not much simpler than refining the Sky Breaker, and Xiao Nan doesn't need to spend much effort, just optimize it on the basis of the original Sky Breaker.

Of course, this kind of thing can't be done in a day or two. After a full seven days, Xiao Nan heard a "jingle bell", and a red light rose from the broken shuttle and quickly disappeared.

"It's finally good, I'm really tired. Duoduo left from the bottom of the shuttle, as if complaining.

Xiao Nan held the Sky Breaker in his hand, looked at it carefully for a while, and found that the appearance of the Sky Breaker had not changed much from before, but the structural changes were really not small, and the momentum of the entire boat was relatively much stronger, obviously it had really been upgraded to an artifact.

"Good brother, I'm hungry and I still want to eat. The flowers were like begging flowers and turning around Xiao Nan back and forth.

"There's nothing for you to eat. Xiao Nan couldn't help but feel a little helpless, in order to make the upgrade of the Sky Breaker go smoothly, he almost threw all the remaining fire crystals in the small world to Duoduo, and now it was less than the size of a cup.

Although there is still a mouthful of cup size, it is enough for Duoduo to eat again, but the next time Duoduo wants to eat it, it will not be there, how to say that Xiao Nan has to think about Duoduo next time, and he still needs to leave some surplus food.

Duoduo snorted coldly and said, "Uncle Villain, if you don't give me food, I won't go into that annoying and boring place, and then I'll follow you all day long, call you Uncle Villain, and see if you dare not give me food." ”

"No! How can you be so shameless? Who did you learn from? Do you know that you are a scoundrel? If you really want to be called around like a bad uncle, wouldn't my image in front of Shui Yun be completely ruined?" Xiao Nan immediately looked full of resentment.

"I learned this from you, if you want to blame yourself, you can blame yourself, my scoundrel is also taught by you, no matter what, today I just want to eat, if you don't eat, you just wait and see." Duoduo said with a straight face.

Xiao Nan suddenly had an urge to vomit blood, so he had to grab the last remaining fire spar, and solemnly told Duo Duo that he must not call the bad guy uncle again in the future, and he must not listen to him.

Finally calmed down Duoduo, Xiao Nan let Duoduo enter the small world, and then took the Sky Breaker out of the room, restored the Sky Breaker, jumped onto the deck, and manipulated the Sky Breaker to speed forward.

Artifacts generally require a drop of blood to recognize the master, but the Sky Breaker is a little different. The Sky Breaker itself is Xiao Nan's thing, and it has been refined by Xiao Nan himself, plus it is upgraded from an immortal weapon to an artifact, so it eliminates the link of dripping blood and recognizing the master.

The speed of the artifact Sky Breaker was beyond Xiao Nan's imagination, and he flew with all his strength to control the Sky Breaker, Xiao Nan only felt that everything around him had become a phantom, and it only took one day for him to reach the neighboring Heaven Domain from the Yongle Domain.

Another day passed, Xiao Nan successfully returned to Yongle Domain, landed in a corner of Yongle Immortal Court, turned the Sky Breaker smaller, and put it away.

Although the speed of breaking the shuttle is very fast, but the consumption is also very scary, just two days of flying with all his strength, he has consumed 20 million immortal crystals, an average of 10 million immortal crystals a day, this number is not scary.

Don't look at Xiao Nan's body with 10 billion immortal crystals, but according to this kind of consumption, he can't support the flight of the shuttle for three years, which has to be said to be an extremely depressing thing.

Fortunately, it doesn't take a few months to go back and forth between the three immortal realms, let alone three years, otherwise Xiao Nan doesn't know whether to take the empty shuttle back to the middle immortal realm or even the lower immortal realm.

Now that the Sky Breaker has been refined, Xiao Nan has nothing to do in the Upper Immortal Realm, and it is time to go back to the Middle and Lower Immortal Realm.

After a while, Xiao Nan found Ling Shuiyun and told her the good news, and found Han Mengyao to express his intention to return to the middle and lower immortal realm with Ling Shuiyun for a while.