Don't just look at the metal fruit that has only grown once, but this has grown a little bit, but it is at least equal to half a month in normal times, and now it has only taken less than an hour.

"Go on." Luo Cheng's temperament has always been temperamental, and now his whole mind is almost buried in the new discovery of the metal tree.

The second piece is aluminum, this time the absorption time is longer than magnesium, nearly fifty minutes later, the aluminum metal block is also absorbed, while the metal tree has grown to nearly forty centimeters, and the fruit seeds have grown a little more.

The third piece is copper, the fourth piece is steel, and the fifth piece is iron, the reason why the iron is left at the end, in fact, Luo Cheng also has his own ideas, mainly because the composition of this metal tree and iron is many the same, and the first four pieces of metal directly make the metal tree grow from thirty centimeters high to nearly fifty centimeters high, and the effect is significant.

"The last piece." Put the metal tree on the iron block, and the metal tree still sticks its fibrous roots into it as if it were bottomless, and absorbs the nutrients.

"Huh?" After waiting for half an hour, Luo Cheng gradually realized that something was wrong, why was the absorption so slow this time?

Half an hour passed, nearly 100 catties of iron were only absorbed by more than ten catties, but the metal tree actually grew ten centimeters, and the most surprising thing for Luo Cheng was that the metal fruit seeds finally came to fruition.

Although there is still a big gap between full maturity, it is a few months ahead of Luo Cheng's imagination.

"Iron, it turns out that iron is the most effective." At this time, Luo Cheng finally determined that iron metal is the most nutritious for metal trees, even though there are many metals such as gold, silver, and aluminum ladders, and he has already made up his mind, and he will use iron to support this guy in the future.

Now the metal tree has grown nearly twice the height, and the fruit has become strong and full, the metal fruit used to be only the size of a glass bead, but now it is the size of a thumb, and it is naturally several times stronger in weight.

"In the future, there will be no supply of super calcium from metal fruits." The new discovery made Luo Cheng sigh very much, he was still suffering from the problem of short supply of metal fruits, but now this problem seems to have been solved, and all he needs to pay is a cheap piece of iron metal.

Carefully calculated, according to the current fruit ripening, at least ten times faster than before, and as the metal tree continues to grow, the fruit is much larger than before, all of which is money.

Money just comes so easily.

"By the way, since it is to absorb metal, then the three ores that I brought back from the cave should also be able to absorb, and that is the ore used by the cave owner to make the flying sword, it should be a bit special, right?"

Somehow, Luo Cheng suddenly remembered three other special ores, he was originally going to Nangang and handed them over to Jiang Wanqing for inspection, if once it was found that there was a special and irreplaceable use value, then the metals under his control would be expensive.

But now that he had temporarily changed his mind, and he was not afraid of hurting this guy's trunk too rudely, Luo Cheng thought of doing it, and immediately pulled its trunk hard and forcibly pulled it out of the iron.

was forcibly pulled out by Luo Cheng, and the roots and branches of the metal tree immediately continued to swing and struggle, looking like a baby being plucked with a pacifier, looking very reluctant and angry.

But Luo Cheng didn't care about it, he first took the gray black ore, a piece of gray ore, and placed it under the roots of the metal tree, and the guy immediately stopped struggling, and obediently got up and stuck the roots into it.

This time, the metal tree absorbed this piece of gray black ore, obviously faster than the iron block, a fist of gray black ore, it took a long time to absorb, Luo Cheng found that the gray black ore was only a circle, if he hadn't been paying attention to it, he would have almost not found that the gray black ore had decreased.

"It's worthy of the mineral material used to create the flying sword, and it's really unusual." In fact, Luo Cheng had already thought that if they didn't have extraordinary characteristics, how could they be collected by the cave master to refine flying swords.

"Hey, what is this?" Suddenly, Luo Cheng discovered a new thing in the metal tree.

Looks like a new fruit seed?

But the color of the dozen or so seeds that grew out of this fruit is obviously no longer the red color before, but gray?

New fruits of different natures? Luo Cheng took a heavy breath, the more he groped, the more the function of this mysterious metal was discovered.

Seeing that this guy was still unhurriedly absorbing the nutrient essence of the gray black mine, Luo Cheng looked at the time, and then summoned the violent bear to eat outside, damn, he almost forgot to eat.

The two of them rented a room in the restaurant outside, and they wantonly called a lot of food, and now that they are back to their own territory, Luo Cheng no longer has any worries, and lets go of his belly and eats violently.

In this meal, the two of them ate thousands of pieces, but the harvest was also obvious, Luo Cheng's one hundred and seventh piece of green scale armor had newly grown, and the last piece was almost complete.

As for the violent bear, he was stunned at first, put down his eating speed, and wondered for a while before he said in a muffled voice: "Master, my tempered skin has been improved." ”

"Improved?" Luo Cheng said curiously, early on, Luo Gang had told himself that he also relied on absorbing food nutrients to improve his wild endowment, but this has been a long time.

Luo Gang ate a lot of food at every meal, but he didn't hear any significant gains from him at all, and now he suddenly said that Ye Fu had improved?

"Well, I could already feel a trace of my tempered layer fused into the deeper flesh." Luo Gang's eyes flashed, and he said in a deep voice, but his expression was obviously a little relieved.

Strength is more important than improving, seeing that the master's strength is like a rocket, from scratch, from there to a high-speed improvement, but as a personal beast slave who protects the master, he has been almost standing still, Luo Gang is also anxious, anxious because he is afraid that he will become more and more unable to protect the master in the future.

Now that the tempered skin has a new improvement change, he finally breathes a sigh of relief, although it is an improvement in the defense of the wild endowment, but at least he can block more powerful bullets for his master in the future.

"How much does that increase?" Luo Cheng pinched the strong arm of his beast slave and said.

"There is no significant improvement effect yet, but since the bottleneck of tempered skin has been broken, then every meal through eating, the effect is still very great, and my current realm should be what the clansmen call tempered skin and flesh, and there is a substantial breakthrough." Luo Gang said honestly.

"Tempered skin, tempered flesh? Is there a higher realm? Luo Cheng asked curiously, it turned out that the cultivation of the Vajra Race was their innate wild endowment.

"The next layer is tempered bones." Luo Gang looked into the distance with a fanatical yearning, and added: "Our Jingang human race has no master, your internal organs, tempered bones are already at the level of legends, the characters in our hometown who can reach this level are all strong, they can tear the fierce beast alive with their bare hands, and they can refine it to the late stage of the tempered bones, even the brute beasts with general weaknesses can also deal with it." ”

Secrets, definitely secrets!

Luo Cheng hadn't heard of it from Luo Gang before, maybe it was because of the last system update, although the update still failed later, but Luo Cheng now heard more information from his beast slave's mouth.

"Tempered bones are the highest level of your Jingang human race?"

(To be continued)