Before going to find the poisonous snake again, Zhou Ran first took a detour and went to the field by the river to take a look, there were a lot of green grass and a small amount of other herbs planted on the field, but those small amounts of herbs were now very wilted, obviously the environment or soil was wrong, but fortunately, the old man still had a little bit of a level in this regard, and he barely used all kinds of nutrient solutions and other things to temporarily protect them.

And on the edge of the field also planted different kinds of crops, these crops are not bad now, the only pity is that the number is too small, of course, Zhou Ran didn't count on it, now take them to eat, these things are used to keep as seeds, and when he turns back, he unlocks the cultivation skills before he plans to officially plant them, after going to the field to look around, Zhou Ran, who came back, walked to the old man's room again, when he was still standing at the door, he felt the scorching feeling coming from inside, when refining the outer Dan technique, The flame intensity required was much higher than that of refining ordinary pills.

Sighing in his heart, Zhou Ran walked in, the old man nodded at him after seeing him, and continued to fan the small fan in his hand, and in the pill furnace in front of him, there was mainly a burst of cyan smoke, even if he didn't look carefully, Zhou Ran could feel the power faintly coming from inside, and noticed Zhou Ran's curious eyes, the old man beckoned to him, signaling that he could come over and take a look.

Zhou Ran walked over to take a look, at this time the furnace was constantly tumbling is a metal block, about half the size of his fist, this metal block is obviously irregular circle, on the top of this metal, most of it maintains its original metal color, but at the edge there are occasionally some red or green or the like, and it is completely inconsistent with the color, the old man casually explained a few words to Zhou Ran, it turns out that the Wai Dan he is refining now uses the most basic metal refining method, The main materials used are a variety of metals with different properties, but they all have the same extraordinary powers.

Just like the piece of metal with the attribute of wind that Zhou Ran brought back to him not long ago, the old man is now trying to remove the impurities in these metals, and then find a way to integrate them, speaking of which, the old man explained to Zhou Ran a little bit about the basic principles of the Outer Dan Technique, in short, the Outer Dan Technique has a very strong main body, and then carries a part of the powerful extraordinary power, and in the process of fighting, they must rely on this Outer Dan, and then release the powerful extraordinary power inside,

Corresponding to the outer Danshu is the inner Dan technique, here I want to focus on the explanation, the inner Dan technique does not refer to those pills that can be eaten directly, although this can barely be regarded as the inner Dan, but in fact it is not the inner Dan technique, the real inner Dan technique refers to the monk who cultivated the golden pill in his own mud pill palace, this is the inner Dan technique of the Eight Classics, and the same, can be proportional to the inner Dan technique of the Jin Dan, the practice of the real high-quality outer Dan can exert its power, The same and the modification of the Jindan period is a level,

The old man can refine the Wai Dan now, it's not that he wants to take the path of the Wai Dan technique, the best thing about the Wai Dan technique is that he doesn't have too many restrictions on refining, the Wai Dan is just a way to improve his combat effectiveness, if you want to give up the Wai Dan, there is no problem, just give up the Dan and go to practice other exercises.

At present, most of the old man's cultivation and his own internal qi, as well as all kinds of weapons and props, are all sealed for the death game, although his current combat power is not to say that 10 does not exist 1, but at most it can only be exerted 3~4 percent.

In this case, it is actually very difficult to improve his strength, if his realm wants to go further, it is martial cultivation, and in this primitive resource where resources are very scarce, if you want to purely rely on your own talent and improve your combat power realm from the innate grandmaster to martial cultivation, it is estimated that the legendary martial arts body can only be done, and things like martial arts and sword bodies sound like they are at the same level as the inferior fire spirit body and the middle grade water spirit body, but in fact it is not. The spirit body is equivalent to the whole body is covered with spirit roots, it is an advanced version of the spirit root, and the probability of appearing is indeed very small, but it is far more than the martial body and the sword body, and it can be compared with the martial body and the sword body, which is equivalent to the legendary best spirit body or holy spirit body.

The old man naturally can't have this level of physique, he can only honestly practice the Wai Dan technique, although only the Wai Dan refined by the high-level Wai Dan can be compared with the legendary Jin Dan period, but even if it is an inferior Wai Dan refined by the low-level Wai Dan Technique, it can also make the old man's current combat effectiveness have a very obvious improvement, and more importantly, the Wai Dan Technique, no matter how it is said, can be regarded as a cultivator's cultivation method, at least it can make him have a very good long-range combat ability.

Zhou Ran nodded clearly, what the old man said did let him know a lot about the Outer Dan Technique, although he was a reborn person, but no matter how he said that he had obediently cultivated the Inner Dan Technique in his previous life, he really didn't know anything about this Outer Dan Technique, after all, even if the Outer Dan Technique was cultivated to the extreme, a top-level Outer Dan, with quite a lot of auxiliary props, the strength that could be exerted was equivalent to the extreme Jindan Period, and there was a very obvious gap with the Yuan Infant Period, As for the Yuan Infant Stage, if a player with a little talent is willing to spend effort, he will definitely be able to cultivate, so a player with good talent like Zhou Ran naturally has never understood the Wai Dan Technique.

"Then old man, how long will it take for your Wai Dan to take? What is the probability of successful refining? Do you need help finding some other materials? Zhou Ran was indeed a little curious, but at the same time, he also very much hoped that the old man's strength could be further improved, he still remembered that when the primordial era was about to end, there was once an extremely large monster falling from the sky, and this creature had a power that ordinary creatures in the primordial era could not match.

At the end of the primordial era, even the end of the Beacon Fire Era, when he came to the era of qi refining, he once learned about the huge monster from the mouth of a loose cultivator, he still didn't know the name of the monster, but he knew that the monster was pregnant with a jewel in its body, as long as it could obtain that orb, it would have almost invincible power in an instant, and obtaining that powerful orb was Zhou Ran's current goal.