Any object that wants to move needs a force, just like a bird flying into the sky, it needs to flap its wings, and An Xu used the principle of charging to float in the air for a short time, which is also the principle.

How to convert the wind element into a driving force is the most critical technology, but unfortunately, this drawing is not very complete in the record of this technology, and it is impossible to analyze it thoroughly in a short time.

"It's okay, don't rush, let's take our time!" An Xu patted Noll on the shoulder and comforted.

Noll was not hit as much as An Xu imagined, and said: "This technology is not useless, at least, we can now combine with the hot air balloon to create a giant airship, it will have a larger load capacity, and when we solve the problem of power source, we can remove the hot air balloon and replace its power source!" ”

"Does it make a difference?" An Xu was puzzled.

"Of course it's different, a hot air balloon is the pulling force that lifts the balloon and sends things into the sky, which is different from a wind-powered airboat that uses the propulsion to move forward! Just like you use a charge, you should know what kind of speed you will exert if you have enough propulsion, and that's the essence of a wind-powered skyboat! ”

As soon as Knoll said this, An Xu immediately understood, and he looked forward to the so-called wind-powered airboat even more.

"Then you try it first, just tell me if you are missing, and I will find a way to help you get it!"

"Okay, I'm going to take a hot air balloon to go back first, there is a place in my hometown that specializes in customizing large hot air balloons, so I don't have to work hard myself!" Nordau.

"Stay safe on the road!" An Xu was a little uneasy, after his understanding, it was not so safe to use a hot air balloon as a means of transportation, and it was possible to encounter danger in the event of a storm or a flying monster.

"Rest assured, we have flown this route together, and it is safe!" Knoll played a package ticket.

So Noel quickly left, which is also the nature of the bits, they do whatever they want, and it is rare to see them spend their lives waiting.

Time flies, Noel has not returned, but the people of the Shang Fang family have sent a letter to An Xu.

There was an invitation letter in the letter, which said that there was some misunderstanding between the Shang Fang family and An Xu, and in order not to hurt the harmony between the two families, An Xu was specially invited to be a guest, and the time could be arranged by An Xu at will.

An Xu was not surprised at all, hypocrisy and resentment have always been the practice of nobles, even if they hate An Xu so much, in order to maintain the prestige of the family, they have to make a look of deep righteousness.

A head-on conflict with a high-ranking nobleman does not do their family any benefit, as long as An Xu goes to the banquet, others will think that it is just a small misunderstanding between the two sides, and there will be no other ideas.

An Xu thought about it, and wrote a reply letter casually, telling them that he would visit him in two days, which is also the etiquette between nobles, and formal visits must be notified in advance, under normal circumstances, this kind of thing needs to be handed over to the ceremonial officer to do, but An Xu's family has no such profession at all, so he can only notify by letter.

An Xu's handwriting was crooked, and he didn't care very much, so he just took this opportunity to go to Shang Fang's house to find out to what extent the undead had penetrated.

After writing it, An Xu put the letter on the table, and then called An Xin.

"Girl, is there something you haven't told me?" As soon as An Xin came in, An Xu asked with a serious face.

An Xin's eyes rolled, and she said coquettishly: "No, An Xin is the most well-behaved!" ”

"Not yet, your teacher has let me know, saying that the school has reopened for a few days, and you haven't gone back to class yet!" An Xu was so angry that her sister had learned to lie.

An Xin pursed her mouth, she has been playing at home recently, and Daile and a bunch of big sisters are with her, which is much more interesting than the boring life at school, so she doesn't want to go back to class.

At school, she was a child under the age of ten and didn't even have a friend.

"Go change your clothes, I'll accompany you to school in a while, I haven't seen Master Kong Nian for a long time, just go visit him!" An Xu admonished.

Master Kong Nian is An Xin's teacher, and he is also one of the people An Xu respects the most, this is an old man with a truly noble character, even a few years ago, when An Xu was the poorest, he did not dislike An Xin's background, accepted her as a disciple, and often took care of their brothers and sisters in life.

"Got it!" An Xin went back to change her clothes sullenly, although An Xu usually has a good temper, but An Xin knows what her brother looks like when he gets angry.

An Xu also prepared, in the past, because his family was poor, he couldn't express his gratitude, but now he is a little wealthy, and he feels embarrassed to come to the door so empty-handed.

I heard that Master Kong Nian likes to drink tea, and it happened that he brought some good tea leaves in Wangcheng last time, An Xu took out some packaged tea, and then took some fruit specialties, and then took An Xin out.

An Xin was wearing a bracelet woven with red silk threads tied to a small bell, making a crisp and beautiful sound along the way, which made An Xu look sideways slightly.

"Where did you get this bracelet?" An Xu asked, remembering that he had never bought her such a trinket.

"Sister Hongluan gave it to me, beautiful, right? Dale and I have both! An Xin raised her hand to show her brother like a treasure.

An Xu was a little surprised, Hongluan would actually give away things, or this cute style, is there any mistake? Also, when did their relationship become so good?

"Brother, why doesn't Sister Hongluan always speak?" An Xin asked.

"Looks like it's because her throat has been hurt before." An Xu didn't know very well, anyway, Su Yue said so at that time, but An Xu felt that it might not be.

To the extent of Hongluan, let alone his throat, even the most serious injuries can be repaired.

There must be other reasons why she can't speak, but this is Hongluan's privacy, and it is inconvenient for An Xu to ask in person.

It's strange to say that since Hongluan moved in, An Xu hasn't entered her dream again, and I don't know what method she used, maybe it has a lot to do with her suppressing her strength.

"Oh! Then I must become a powerful therapist, so that I can cure Sister Hongluan's throat, and her voice must be very good! An Xin clenched her little fist.

"Hehe, then you can do your best!" An Xu didn't dampen her enthusiasm, and it was a good thing to have a motivation, although this goal was very illusory.

The scale of the Healer Academy is actually very small, far less magnificent than the Demon Martial Academy, if the Demon Martial Academy is a vibrant atmosphere, then the Healer Academy is like a peaceful paradise.

The world of therapists is not so competitive.

There are also very few students here, because according to Master Kong Nian, not everyone can become a healer, and they must have a high degree of compatibility with the light element.

The reason why An Xin was able to start learning healing spells at a very young age was because she had a particularly high compatibility with the light element, but more often, she was learning the basics, because her star energy was not yet mature.

Master Kong Nian didn't look like anything had changed, he was always dressed in loose white, with a happy smile on his face, he was a very optimistic old man, although his beard was white, his skin was very good, and his mental state was good.

Therapists know how to take care of their bodies better than others.

"Teacher!" Although An Xin doesn't want to go to school, she has great respect for this teacher who loves her.

"I'm already very happy to be able to come and visit my old man, and I still have something to bring and spend all that unjust money!" Master Kong Nian looked at An Xu carrying a large bag of things and blamed.

He didn't know that An Xu had become a nobleman, and An Xu didn't want to say it specifically, this kind of interaction that had nothing to do with material was the most heartwarming.

"An Xin has been taken care of by you, and she has also caused you a lot of trouble! It's not a precious thing, just to express my respect for you! An Xu smiled.

"What's the trouble, An Xin, this kid is very sensible, which makes people worry-free, and he can be regarded as my proud disciple!" Master Kong Nian waved his hand.

An Xu glared at An Xin, she was still sensible, she was starting to skip class! An Xin shrunk her neck and grimaced with her back to her brother.

After talking for a while, just as An Xu was about to say goodbye and leave, suddenly Master Kong Nian asked, "By the way, I remember that you are a mercenary, right?" ”