Although the powerful divine sense and strong true yuan power are not a problem for Lei Dong at all. And the rich refining experience is also the success rate, and it can't limit the thunder that has a 100% chance of synthesis.

But Lei Dong still understands the principle of following the customs, he doesn't want to be an outlier in the eyes of others, since the sect is set like this, Lei Dong has no choice but to abide by it. Moreover, he had now discovered the strengthening function of the system, and the cultivation resources in all aspects would not cause him any cultivation crisis for the time being.

In the end, Lei Dong simply made a high-profile return, and directly exchanged all the refining illustrated books of the first-level spirit treasures as a reserve for the system.

If someone really asked, Lei Dong only needed to say that he wanted to try to get in touch with the spirit treasure refining piece, anyway, he was also rich at this time, and no one would doubt his economic strength.

First of all, it is a first-level one-time Spirit Treasure Array Rune, which contains Defense Array Runes, Acceleration Array Runes, Power Array Runes, Endurance Array Runes, and Attack Array Runes (there are as many as five elements and twenty-five types of attack array runes).

Secondly, it is the refining illustrated book of the first-level Lingbao Qiankun gourd (red), the refining illustrated book of the first-level Lingbao Lianxin snail, the refining illustrated book of the first-level Lingbao rune pen, the refining illustrated book of the first-level spiritual material demon blood ink ingot, and the refining method of the first-level blank array rune.

The exchange of these spirit treasure illustrated books used a total of more than 14,000 low-grade Yuan Stones.

Of course, Lei Dong's own Yuan Stones were almost all spent when he entered the Haotian Realm, and the seven hundred Yuan Stones he had just received were not enough.

So he had to go to the Tianji Building not far away first, and sold all kinds of pills (mainly from Mu Jianchen) obtained from the Haotian Realm, and the elixir benefits he had just received, as well as a few pieces of Huangjie high-grade fire ore ~ fire crystal ore that had fooled the sect and were not refined into ingots.

In the end, the proceeds from Lei Dong's sale, plus the seven hundred yuan stones he had just received, and the remaining hundreds of yuan stones from his past, totaled fifty thousand eight hundred and sixty-five.

By the way, he also purchased a batch of auxiliary medicinal materials for refining poison pills, and medicinal materials for the upper grade and lower grade pills of the mortal rank, and then removed the yuan stones needed after exchanging the Lingbao Illustrated Book, and Lei still had more than 40,000 lower-grade yuan stones left in his hand.

After Lei Dong returned to the Imperial Dragon Mansion, the first thing he did was to combine 30,000 lower-grade Yuan Stones into 300 medium-grade ones, leaving 10,000 pieces in the Qiankun gourd.

In the Haotian realm before, Lei Dong experimented that a hundred low-grade yuan stones could be synthesized into a medium-grade one.

Medium-grade Yuan Stone: Lower grade Yuan Stone +100: Heaven and Earth Treasure, containing thousands of stones without attribute vitality.

In the lower grade Yuan Stone, there are 100 stones without attribute vitality, while in the middle grade Yuan Stone, there are only 1,000 stones without attribute vitality, and the vitality in 100 lower grade Yuan Stones adds up to 10,000 stones.

On the surface, it seems that using low-grade yuan stones to synthesize medium-grade yuan stones is a loss-making business, but in fact, it is not! But even if you have 100,000 lower-grade Yuan Stones, you can't activate the middle-grade Gathering Yuan Array for cultivation.

That night, Lei Dong tried it for the first time, under the Zhongpin Juyuan Array, taking a turn of Juyuan Dan, and cultivating the terrifying effect of the Yellow Rank Zhongpin Gong Method "Yin and Yang Five Yuan Decision".

That was really not much worse than Lei Dong's extravagant cultivation in the Haotian Realm when he used the water of the best spiritual spring.

After the medicinal effect of the Gathering Yuan Pill was passed, Lei Dong said with emotion: "This cultivation speed, I don't know how many times faster than the Heavenly Spirit Root Martial Artists of the same level! If I continue at this cultivation speed alone, I can make another breakthrough within a year!"

After a martial artist enters the Yellow Rank, each time he ascends to a small realm, it is often calculated in units of more than ten years, or even decades. If others know that Lei Dong can break through a small realm in a year, I am afraid that he will definitely catch Lei Dong and ask him how he did it.

Liu Pei and Jin Hu could naturally feel the opening of the Zhongpin Juyuan Array, but they only felt that the vitality in the formation was a little more intense than before, and there was no other difference. I didn't know that at this time, Lei Dong was the effect of the medium-grade Juyuan Array triggered by the medium-grade Yuan Stone.

This is because of the middle-grade exercise "Yin and Yang Five Yuan Decision" cultivated by Lei Dong, and the terrifying absorption power of the one-turn Juyuan Dan taken. If the absorption power of the thunder is greater, I am afraid that the gathering effect of the medium-grade Juyuan array will not be able to keep up.

Two days later.

Today is the day of the start of Kong Zhi's class.

Lei Dong got up early to pry himself up, after all, he was going to listen to Kong Zhi's martial arts lecture, and he couldn't be too casual, so as not to end up with a bad impression.

Soon, Lei Dong came to the Tianji Palace, and after entering, he found that there was no one else present except for the master Kong Zhi, there was only one iceberg girl left, Ni Jialan.

Originally, Lei Dong thought about it, but today Kong Zhi started class, and most of the core disciples of Tianji Peak would definitely be present.

Lei Dong was slightly stunned, and said secretly: Could it be that I came early, and the other core disciples have not yet arrived? It's not right! Master Zun talks about martial arts, why did Ni Jialan also come? She is only in the late stage of the mortal level at this time, and it seems that it is not yet time to contact the world of yellow-level martial artists!

"Disciple Lei Dong greets the master!" Lei Dong bowed and bowed.

"Excuse me!"

Kong Zhi said with a smile on his face, which showed that he was in a good mood at this time.

After Lei Dong sat down, Kong Zhi spoke: "The two of you can return safely from the Haotian Realm this time, it can be said that you are both people with great opportunities and great luck. ”

"At the same time, you are also rare special talents in my Tianji Peak, with special talents. Today, as a teacher, I will first point out the path of your future cultivation in the future, so that you will not take many detours and go astray!"

Lei Dong was a little puzzled when he heard this, and said secretly: "Didn't you say that you were going to talk about martial arts today?

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"My path is very clear, that is, to reach the pinnacle of martial arts, to become an invincible existence in this world, to beat whoever you want, to sleep with whoever you want, it's that simple!"

Kong Zhi continued: "Then let's talk about Lei Dong you first!"

"Master, please speak, disciple listen!"

Lei Dong immediately recovered from his reverie, and then replied respectfully.

"What about you, you are originally the Five Elements Spiritual Root, and this time you entered the Haotian Realm, you must have also obtained the opportunity to be reborn in the Spirit Spring!" Kong Zhi talked eloquently, as if he knew everything.

"Well, exactly, the disciple still has to thank the master and give the disciple guidance, otherwise the disciple may not be able to get rid of the mortal womb for the rest of his life and achieve the realm of a yellow-level martial artist. ”

Since Kong Zhidu thought so, Lei Dong got off the donkey down the slope and used it as an excuse to break through to the yellow level.

(End of chapter)