Only five big gray worms and three small gray worms were collected in one afternoon because the Burning Valley was originally a peaceful place and even had a tendency to develop towards a crowded place. Of course, there would be no such powerful monsters in such a place.

Such a quantity is accumulated with his hard work.

Zhou Fan didn't think much and said, "I want to know all the cultivation things about the blood exchange stage, especially how to practice this stage to the extreme?"

"A big gray worm." Heilong said indifferently. This was the price set by the previous guide.

"Of course." Zhou Fan agreed.

The black dragon scratched the front paws and took out a big gray worm from the glass ball. The big gray worm crawled into gray light and merged into its claws. A big gray worm could not make it interested.

After all, this river requires 256 large grey worms to catch a fish for a boat, which is even more terrible for their guides.

However, here, the gray worms that guides can trade from the boarders will also increase accordingly. Moreover, there is no big difference between the things they catch on the river surface of the guide, and the things they want to fish are often not a cultivation resource.

When Zhou Fan saw that the black dragon had collected the big gray worm, he waited patiently for the black dragon's explanation.

"The cultivation methods of our dragon clan and your human clan have nothing in the early stage." The black dragon said slowly.

Zhou Fan's face changed slightly. He thought to himself that Heilong would want to tell him, he didn't know, right?

"However, I have studied the cultivation methods of various races. The cultivation of human race has been deduced to the extreme. It is the object of research and even imitation of various races. Therefore, the cultivation methods of human race are no less than those of you human race's strong people, and even their understanding of some levels is even greater than that of them." Black Dragon said proudly.

Even if it is a dragon, Zhou Fan has long discovered that the dragon's emotions are no different from those of human beings, and can be easily expressed through the dragon's face and golden eyes.

"Specifically, there is not much new in the human race's blood exchange segment. Just like the beginning of your physical strength segment, it can open up a qi field to condense true qi, while the marrow cleaning segment is to clean the marrow bones and condense true qi. The blood exchange segment is also to transform the flesh. The body can condense more true qi for your use."

"But this time it's no longer a bone, but blood. The practice of the blood exchange section is to allow the martial artist's blood to blend with the true qi." Black Dragon said calmly.

"In addition to replacing old blood with new blood, new blood can not only merge with true qi, but also make the warrior's qi and blood strong, and avoid all diseases, and can resist the more ordinary vicious poison to a certain extent."

Zhou Fan knew that he did not interrupt the Black Dragon, but listened patiently.

"There are only two ways of practicing the blood exchange section. The first is to absorb vital energy through exercises and slowly transform one's own blood, so that human blood can be freely integrated with the true energy..."

"This first type can be said to be the most common and common blood exchange route. In particular, it will be divided into many levels with the help of elixirs due to the skills. However, I don't think you will be interested in listening to the first type of cultivation route."

The black dragon glanced at Zhou Fan's state. This warrior looked ordinary, but so far, all levels have been cultivated to perfection. He is obviously a warrior who pursues perfection.

"What about the second one?" Zhou Fan really didn't have much interest in the first cultivation route.

"The second type is the top different blood route in the blood exchange segment. They are not satisfied with the old blood of the human body to replace new blood, but use other blood to exchange and blend with their own blood, thus creating a level that is difficult to reach to make themselves stronger."

A strange color appeared in the black dragon's eyes, "There are always some lives in the world. Their blood can accommodate far beyond the limit of the true qi stored by human blood, and it also has the powerful ability of species blood."

"Your ability to be a treacherous person is just inherited from the ideas of ancestors from the monsters, so I think you should be able to understand this desire for blood exchange."

"Is this kind of change to different blood really working?" Zhou Fan showed a solemn expression on his face.

After all, if it is placed in his world, the wrong blood type transfusion will kill people, and can other races have blood?

Heilong smiled and said, "At the beginning of the practice system, you human strong men did die in order to fuse the blood of other races in the blood exchange section. After all, the human body is so fragile, but later they slowly found a set of feasible fusion methods, which greatly reduced the risk of fusion of different blood."

"What method?" Zhou Fan asked interested.

"It's hard to tell you in detail. Different methods of fusion of different blood are different. Some blood is like fire, frost, and heavy mercury. How can there be a unified solution?" Black Dragon shook his head and said, "It's a huge price for human powers to study the fusion of these blood."

"They will only leave it to their descendants. The secret method of blood-melting has always been secret and not passed on, otherwise you won't ask me."

The black dragon showed sarcastic expressions, and the selfish nature of human beings is also very famous among many races.

"So if you want to go the route of different blood, you must find the secret method of different blood and blood-thawing, both of which are indispensable." Black Dragon concluded.

"What is the strongest alien blood?" Zhou Fan asked.

"You humans divide alien blood into three categories: animal blood, treacherous blood, and blood transplantation. There are thousands of well-known types in each category, which is difficult to count. However, you humans still want to divide alien blood into five levels, the fifth level is the weakest, which is stronger than human blood, and the strongest among them is the first-class alien blood."

"This classification may not be comprehensive and accurate, but it can still be used as a reference." Heilong commented.

"Beast blood, I understand the blood of the treacherous blood, but what is the blood of the plant? The blood of the plant?" Zhou Fan was slightly stunned.

"It is a spiritual plant. Spiritual plants are different from ordinary plants. Some spiritual plants also have blood, and their blood is also extremely powerful." The black dragon explained patiently.

Zhou Fan asked several more questions, and the Black Dragon answered them in detail.

"Do you have first-class alien blood and blood-thawing secret methods?" Zhou Fan asked with a flash of his eyes, "For example, what is the order of dragon blood in alien blood?"

The black dragon had already expected Zhou Fan to ask this, and she sneered: "Dragon blood is also strong and weak, but our dragon clan is the favorite of heaven and earth, the weakest jujube dragon, and the dragon blood is also third-class. There are dozens of dragon races that can be listed as first-class dragon blood."

"Is Lord Dragon Lord's blood the first-class?" Zhou Fan's eyes became hot. If this black dragon dared to be called the Lord Dragon, her blood would definitely not be weak.
Chapter completed!