Mu Bei didn't bother to explain and directly changed back to Han Mengrong, and in the blink of an eye, he became Mu Bei again.

Han Tieyao opened his mouth wide, and was stunned by the series of changes in Mu Bei's facial features, and then stepped forward and grabbed Mu Bei's cheek and pulled it a few times.

"It's true, it's amazing!"

"Ouch, let go, uncle, it hurts to death!"

"No, this is very interesting, you have to teach me. Han Tieyao said excitedly.

"I can't teach this, I can only use it myself, uncle, you let me go, I can't recover if I tear it off." ”

The cold iron medicine tugged a few more times before letting go of his hand with some disappointment.

"You kid deliberately hung my appetite, didn't you, what good things did you have this time?"

"Not really this time, remember the last time I made a bet with you, how is it now?" Mu Bei shrugged his shoulders and said.

Han Tieyao patted his head and said, "If you don't say it, I really forgot, I'll take you to have a look." ”

After a while, Han Tieyao took Mu Bei and turned around into a cave, which was full of green.

Mu Bei frowned, feeling that the aura was not very full.

"Uncle, this aura doesn't seem to be too much!"

"That's true, you see, except for the few plants you brought back, everything else can only produce a small amount of aura. The cold iron medicine pointed to the few Heavenly Spirit Grass in the middle.

"Did you find out why?"

"I've researched it, it should be the soil, those plants are made of the soil you brought back, so the yield is very high. ”

"Can you develop a recipe for this clay?" asked Mu Bei.

"I've been getting some for those guys who specialize in geology, and it's been a few months, and I haven't had time to ask, so you came and went to have a look. ”

After Han Tieyao finished speaking, he took Mu Bei to another cave, where more than a dozen people of different ages were tinkering with a pile of dirt and stones and other things.

"Brother Li Guang, how is the soil I asked you to help with your research now?" said Han Tie Yao to an old man in his sixties.

Li Guang is an ordinary person, he loves to study some special clay and stones in his life, and he can always find out the difference.

At this time, Li Guang was recording the research results on the table with paper, and when he saw the cold iron medicine, he smiled and said, "Old man Han, you are here, I was looking for you, please take a seat." ”

Mu Bei glanced at the snow-white paper, but he didn't expect that the paper had been made after a few years.

At the beginning, it only provided the production concept and process, and now it can be made and used, but it has not been circulated and promoted outside.

Han Tie Yao was also not polite, and sat down directly and said, "Did you get the results of that soil analysis last time?"

Li Guang stretched out his hand and said, "Wait, I'll look for the record." ”

After a while, Li Guang took out a piece of waste paper from a pile of messy paper, looked at it and said: "After the soil is separated, eighty percent of it is the same or similar to the ordinary soil, and only two percent are special substances, and the composition in it is very strange, I have never seen it before, and it doesn't seem to be a thing on this continent." ”

"Is it possible to make the same ingredient and the same clay again?" asked Mu Bei.

Li Guangshen exhaled and said: "With the current theoretical basis, it is indeed possible, but many of our things are only in the preliminary stage, at least we need to enter the microcosm of the theory of the university to be possible, and this process is estimated to be as few as a few decades or as short as a hundred years." ”

Mu Bei also knows that scientific research requires a long period of exploration, and the current weak foundation and many tools and facilities cannot be produced, which greatly limits the process of research, but this is also no way, science needs to accumulate and cannot be impatient at all.

After Mu Bei stayed for a while, he left with Han Tie Yao, and visited all the research projects and results at Mu Bei's suggestion.

After a visit, there are very few things that can be used in daily life at present, and the only good thing is *** research.

For example, the pistols and rifles in the previous life have great results, using many subtle magic circles to store spiritual power in them, which can be fired continuously, and can penetrate the qi wall laid by the powerhouses of the Chengdan realm, this weapon requires cultivators to infuse spiritual power, and is suitable for cultivators who gather qi to the Chengdan realm.

As for the thermal weapons used by ordinary people, they are still being studied, although there are patterns and principles, and even the best has been developed, but the basic science is not perfect, and many things cannot be manufactured.

Mu Bei immediately proposed another thing similar to **, and casually drew a picture to break it down, and boldly conceived a weapon that combined spiritual power and **, and named it Shadow God Thunder. Of course, what is proposed is only a concept, and as for how to make and develop, it is up to these intelligent people to be responsible.

Qian Zhuliang, the director of the Academy of Xuanke, was very interested and immediately said that he would arrange for the development immediately.

When Mu Bei walked out of the underground Xuanke Academy, he found that it was already dawn, but he didn't expect to stay in it for so long.

After returning to the dormitory, Mu Bei took Zi Ran out of his arms, this little guy was still sleeping, but his body was a little bigger than before.

For the next half a month, Mu Bei stayed in the academy to practice, until he stepped into the half-step Dao realm, and at this time, he felt that the divine thunder seed in his body began to move, and his whole body had a feeling of paralysis.

At this time, Wen Caichen, Lu Qingxue and others returned to Sanjiang Academy.

"Mu Shaoxia, why are you in Sanjiang Academy?" Wen Caichen asked in shock.

"Hello Senior Brother Wen, I am now a fourth-year special student in the senior department, and we will all be senior brothers in the future, please take care of me. "Mu Beimian does not change its color.

Lu Qingxue blinked her bright eyes, as if she was holding back a smile: "Senior Brother Mu, I didn't expect it, I just said goodbye and met again in a blink of an eye." ”

Mu Bei said casually: "Senior Sister Lu, this is fate! You know that the Xuantian Ruins Realm is about to open, and we all have the opportunity to go." ”

"Naturally, we knew that we only came back after receiving news from the school. Wen Caichen said with a smile.

"Yes, this kind of opportunity is once in thousands of years, and we will not let it go. Yagawa said with a smile.

"That's right, let's strive to break through to the Dao Realm in the Xuantian Ruins Realm, and then we can graduate smoothly!"

"Haha, that's what I thought!"

Everyone seemed very excited under their words, anyway, they had nothing to do, Wen Caichen proposed to camp outside the mansion at night, which was unanimously approved by everyone.

Since the last camping, everyone has enjoyed the relaxed atmosphere, and they have been singing and drinking outside the house whenever they have the chance.

In the evening, everyone left the school and went to the usual camping place to indulge happily, and in the end everyone was a little drunk.

"Senior Brother Ye, have you noticed it, Senior Sister Lu has been looking at Senior Brother Mu all night, and that kind of look is like looking at Senior Brother Han, as if they are the same person. Wen Caichen put his arm around Yechuan's shoulders and said.

"Don't tell me, I feel that way too. Could it be that Senior Sister Lu is really empathetic and don't fall in love?" Ye Chuan nodded a little confused.

"Wouldn't it be nice if Senior Sister Lu likes Senior Brother Mu, and Senior Brother Mu also likes Senior Sister Lu? Wen Caichen sighed a little.

"Senior Brother Wen, who are you sorry for?" Ye Chuan hiccuped.

"It's a pity. ”

"Senior Brother Wen...."Ye Chuan looked back at Wen Caichen and found that he was actually asleep, and after sighing, he also fell asleep.