After sending off Dean Nangong, I opened the barrier against eavesdropping.

"Hehe, Xiao Jianzi, Xiao Tongzi, you 4 lines. Old man Bai and I thought it would take 6 years to tell you the purpose of coming to Datong Academy, but I didn't expect you to do it in half a year. ”

"Master Black, what is your purpose? You don't want to do anything bad, do you?"

"Hehe, Feng'er, Master Hei and I let you enter Datong Academy do have some things for you to do, and they are also things you must do. ”

What must be done? I suddenly thought of what Xiao Jin had said to me.

"Two teachers, you really know how to pick a place. It seems that the Lion Emperor guessed correctly, you asked me to find a way to get the qualification to go to the Library Pavilion as soon as possible in order to explore the Treasure Pavilion. Alas, I don't know what kind of cultivation Master Xiao Bozu said, we will be hunted down, there is no way to go to heaven and no way to go down to earth. ”

"Hehe, little sword, you're afraid. ”

"I'm afraid, but with that Xiao Shi Uncle Ancestor covering, we still have a place to hide. I really want that thing, how can I go back empty-handed when I enter Baoshan. ”

Erya looked at me with a wicked smile and said, "Yes, brother." Being chased and killed by the ascending immortal into the holy realm is exciting to think about. ”

Looking at Erya's bad appearance, Feng'er nodded happily, and Hong Tong and I smiled bitterly but nodded at her.

It's okay, let the storm come more violently, so that the next time I see Emperor Turtle, I will have to blow.

We're here for the Treasure Pavilion!

The next day, we went to Shenmu Peak late at noon, and Feng'er once again swept the free meal in the Mushen Peak canteen. And her Ouyang mother ordered an extra level 1 meal for her this time!

"That, thank you, Mother Ouyang. Don't give Feng'er more food in the future, Feng'er doesn't need to eat so much. ”

Feng'er looked at the level 1 meal delivered to her, and expressed her gratitude to Ouyang Lanshu embarrassedly.

Teacher Ouyang smiled and said, "It's okay, as long as Feng'er can let Ouyang's mother comb your hair." ”

Feng'er immediately nodded happily and said, "Okay, okay." Ouyang's mother Feng'er comes to you every day to help me comb my hair, but Feng'er really doesn't need to add food. If you eat it again, Feng'er will become a piglet. ”

Feng'er's words caused a burst of laughter in the cafeteria, and the one who laughed the happiest was of course Teacher Ouyang.

Seeing Feng'er pushing Teacher Ouyang's wheelchair away, Erya withdrew her jealous gaze and looked at me with some concern.

"Brother, Teacher Ouyang is Song Shengjun's wife, Song Shengjun, you said that his detection ability is not trivial. If Feng'er stays by Teacher Ouyang's side all the time, will Feng'er's identity be exposed?"

I also responded to Erya with a spiritual call: "Alas, that teacher Ouyang is very similar to the biological mother of the blood hosta I saw in my dream. The attachment Hongchen that is amplified by the dragon and phoenix divine stone can make the soul of the blood hosta's parents connect with their daughter, I have seen Feng'er's parents, Feng'er, of course, she knows better. ”

Tears appeared in Erya's eyes, and she looked at Feng'er's back with pity. It seems that Erya will definitely be a good mother in the future, cheap Hongtong that kid. Thinking of this, I couldn't help but look at Hong Tong, who was looking at Erya with affection.

"Do it and cherish it. ”

Hong Tong was stunned, turned to me and nodded firmly.

We were stunned when we saw the swallowing of gold. A line of red lacquer next to the metal piece of the gold mouth is particularly eye-catching: Those who are lamps for a day are exempt from the entrance fee. We immediately understood what it meant, and we couldn't help but admire Mr. Zheng Guowei's abacus.

Sure enough, a reading area was opened up near the dimly lit library door. At the top of the reading area hangs a transparent gem the size of an ostrich egg, on which the Spirit of Light continues to glow, and the gem doubles the intensity of the Light Spirit's light, and radiates the light evenly in all directions.

Seeing the gem Erya, she couldn't help but widen her eyes and sighed: "It's really worthy of our academy, and you can use such a big divine light gem as a lamp." ”

It looks like it's worth a lot, but I don't know how much it's worth. Erya and Feng'er often go to the gem section of the various auction houses in the city, and they sell or exchange many of the gems from the thieves we got from Hibiscus Blossom for natural treasures. Now their knowledge of jewelry, Hong Tong and I are not as good as ourselves, and we are also amazed by the numbers on their 10,000 gold coupons.

Sure enough, under the lamp, the senior who had just ascended the king realm sat below, and he kept outputting energy to the light spirits above to keep it the same brightness. Of course, Mr. Zheng's office area is also indispensable below, after all, he has to be the first to enjoy what he stole.

Hongtong and I each selected the books in the two book towers next to each other farthest from the door, and I secretly opened them as I walked. But my probing magic couldn't penetrate half a minute when it reached the middle of the tower, which was enclosed by a metal fence. I tried to dig deeper into the depths of the Exploration Magic, and when I got to 50 meters underground, I couldn't penetrate a single bit.

In the afternoon, we returned the books and left the library.

On the way to pick up Feng'er, Hong Tong's spiritual call came: "Boss, it seems that the entrance to the Treasure Pavilion should be under the tower in the middle." From there, 50 meters down there should be a treasure pavilion. ”

"All of you, the floor of the Library Pavilion should be under the flat ground, isn't the Treasure Pavilion deep underground?"

"Yes, Erya. Not only is the Treasure Pavilion located deep underground, but it is also surrounded by groundwater. What's even more troublesome is that there are biological reactions in those waters, and there seem to be no less than level 3 magical beasts among them. ”

"Boss, level 3 Warcraft!"

"Well, to make matters worse, there was more than one, I felt two. One of them also seemed to react to my probing, trying to search for me. Although I withdrew in time, I had already alerted it. If those creatures were guardian beasts, it would be even more troublesome for them to inform the academy that we wanted to investigate in the future. ”

The underground pool of Mushen Peak.

Soft light shimmered in the deep pool, and a huge white light mask in the shape of a hemispherical light shone brightly in the deep pool. The situation inside the reticle was not visible, but a group of black shadows were swimming around the periphery of the reticle, occasionally accelerating towards the orb of light. They collided with the ball of light and were sent flying like cannonballs, but after a few swings of their long bodies in the water, they quickly stopped their momentum, and then continued to swim as if nothing happened.

The evening a few days later.

I sent Zhan Tianjue and Duanmu Qinxiao out of the hospital, and Mr. Zheng Guowei suddenly appeared at the gate of the hospital with a large number of boxes. He looked at me with interest, and I couldn't help but be a little wary, and my hand was retracted into my sleeve to prevent (eavesdropping) on the metal plate, and then it was put into the ring.

Teacher Zheng immediately noticed that the anti-listening enchantment was gone, and he looked me up and down suspiciously. I greeted him with a smile, and after introducing Mr. Zheng to Zhan Tianjue and them, I invited Mr. Zheng into the wing of the Quanchong living room in our courtyard.

"How do you sell that anti-eavesdropping energy guide?"

"Not for sale. ”

Seeing my resolute attitude, Mr. Zheng didn't continue to entangle, probably not because of the things that could be used in the library, so he wasn't so persistent.

"Long Yujian, give me the kind of metal you used to make a light elf, I want to make two more light elves. ”

Looking at Mr. Zheng with an eager expression, I secretly apologized in my heart: "No, that kind of metal is a family secret, and it must not be passed on." ”

"10,000-year-old fennel, kidney beans and 10,000-year-old nine-leaf pampas reed!"

They are all natural treasures that are not inferior to the 10,000-year-old snake-headed orchid.

"No, that's definitely not for sale. ”

"Then you can make a spirit of light and sell it to me. ”

"I'm sorry Mr. Zheng, that kind of metal was only used because I tried to make the first batch of light spirits, in order to ensure that the energy consumption would not be too huge and could be used. ”

"Add one or two hundred flower ginseng!"

I looked at Mr. Zheng Guowei, who gritted his teeth and raised the price, and shook his head quietly with a calm face.

"Say what you want, this is a treasure that you Teacher Zheng can hold. ”

Saying that, Mr. Zheng put the dozen or so boxes in his hand on the table, and I can identify most of the heavenly treasures by smell without him opening them, all of which are good things that are more than 10,000 years old!

"Teacher Zheng, didn't I tell Principal Nangong that it can be made of crystal red copper, which is the best alternative material known now. ”

The spirit of light that Er Ya was snatched away by Teacher Zheng was carved from the special magic metal Demon Stygian Copper forged by my god-level magic penetration. Demonic copper has properties that are extremely close to that of a superconducting material at room temperature, through which almost any energy can be conducted without loss. However, once it is made into an energy guide or magic guide, it can no longer be melted and reshaped, and it is too wasteful to use it to make a low-level energy guide or magic guide similar to the spirit of light.

The Light Elves I gave Black Hibiscus were made of magical metal similar to the Crystal Copper effect. In addition to the light elves that were given to Hongtong in the early days, there was only that time because I promised Hua Xiangrong, so in order to compensate Wan'er, I specially used the demon bronze to make a light elf that can release colored elves by attributes.

Mr. Zheng's bald head in the middle of the chicken nest shook like a rattle: "No, no." Dean Nangong and Teacher Ouyang have already tried it, and their energy consumption will increase by more than four times. The kind of metal in your house, Teacher Ouyang said that she had never seen it, it was made by a secret method of metal smelting unique to your family, and she didn't have any way to copy it. ”

Teacher Ouyang? I didn't expect her to be a master of guide making and alchemy. It's not that she can't refine the Demon Copper, as long as she can melt the magic power of her magic capsule solidification, but it's still very difficult.

"Teacher Zheng, even if the energy is increased by four times, the ability master of the initial level of the Xuan Realm is not guaranteed to illuminate a whole day within 20 meters. ”

"I'm a perfectionist, don't say much, come on, Long Yujian, you choose. ”

I sighed deeply and reached out and pressed my hand to the box containing a 10,000-year-old fennel kidney bean.

"Teacher Zheng, I have a compromise solution, don't you see if it's okay? I know of a way to make an alloy, using Crystal Red Copper and adding the right amount of Heavenly Ice Cold Iron and Vulcan Lead to obtain an alloy, and the Spirit of Light made from this alloy can reduce the energy loss by half compared to the simple Crystal Red Copper. I'll take you a 10,000-year-old fennel kidney bean as payment. ”

Mr. Zheng was still not satisfied, but he was a scholar, and he knew that a method of making an alloy that doubled the properties of the metal was much more valuable than two pieces of demonic copper that made the elves of light.

In the end, after accepting the alloy formula, Mr. Zheng insisted on leaving one plant of 10,000-year-old fennel kidney beans and nine-leaf pampas reeds, and one or two ginsengs and then left in a huff.

Looking at Mr. Zheng's sullen appearance, I felt a little sad in my heart, but how could I promise you, Mr. Zheng.

This metal can't spread out, and I've already discovered that there is at least one saint-level black mage in this world in Tongtian Valley. Demon Copper was originally a metal invented by black magicians, and it has some extremely terrifying uses, once it is used by people with ulterior motives, it will be ruined.