"Stop, stop, you say that, it reminds me of something that's been around for a long time, and I need to calm down. Pen? Interesting? Pavilion wWw. ｂiquge。 info," Olaf said in alarm.

Zhang Nian saw Olaf's panicked appearance, Zhang Nian quickly stopped talking, stood aside and looked at Olaf who was a little overwhelmed, Zhang Nian didn't know why this Olaf was so flustered, isn't it just some thirty or forty level demons, he can handle it, Olaf is lying like this?

"Spiral Hell, Spiral Hell, it must be Spiral Hell, you have really made a great contribution to the human race, and you have found the existence of the Spiral Hell, I must report this matter to the five city lords, so that they can reward you well." Olaf said excitedly.

"'Spiral hell'?" Five Great City Lords'? It's all about what and what. Zhang Nian asked suspiciously.

"Let me first explain to you the relatively easy to explain the 'Five Great City Lords', the 'Five Great City Lords' are the city lords of five first-class cities, each of them is more than a hundred level existence, from the time of the existence of the human race, until now, our entire human race has only appeared six such super strong people, one of them died in the hands of the demon demon king during the human and demon war, and the remaining five are the city lord of the 'City of Life', the city lord of the 'Death' city, and the city lord of the 'Light' city. The lord of the city of darkness and the lord of the city of chaos. ”

"These five first-level cities are not built on land, but in the sky, there is only one city lord living in each city, and the five first-level cities protect our entire human race in the sky, once the city lord of our second-level city encounters any thorny problems, he can directly find the city lord of the first-level city closest to him, except for the city lord of our second-level city, others have no chance to enter the first-level city."

"It is worth mentioning that Lord Indar was also a strong man of more than 100 levels, but Indar's city of the dead had not yet had time to be built, and Indar unfortunately died in the battle with the demons." Olaf said sadly.

"Let me explain to you the 'Spiral Hell' again, the 'Spiral Hell' was a product of the Great War between humans and demons back then, at that time, this 'Spiral Hell' was a stronghold for the demons to attack the Terrans, and I don't know how many demons came to the Terrans through this 'Spiral Hell'."

"'Spiral Hell' is divided into eighteen layers, the demon level of each layer is five levels higher than the demon level of the next layer, the types of demons in each layer are the same, and the range of each layer is almost endless, how can you not find the boundary, only by killing the boss of this layer can you find the passage to the next layer, these demons in the 'spiral hell' are all projections of the truly powerful demons, and they will supplement the projection of the demons in the 'spiral hell' every day, that is to say, ' Every 12 o'clock in the morning, the demons in Spiral Hell will all be resurrected, the boss will also be resurrected, and the passage to the next layer will disappear! ”

"According to legend, in the 'Spiral Hell', the monsters on the last layer are all ninety-level monsters, and there are also legends that the last layer of the 'Spiral Hell' is the Demon Race, but no one has ever entered the last layer of this 'Spiral Hell'."

"You don't need to know much about the 'Spiral Hell', and it is recommended that you don't go near the Moon Shadow Cave in the future, at least not until you can't deal with some powerful demons."

"Your mission to explore the Moon Shadow Cave this time is a complete success, because you are exploring the 'Spiral Hell' this time, so I have temporarily decided to increase your reward. If you have enough materials, I can help you upgrade a ninth-order artifact to a tenth-order artifact at most, however, you can listen to the premise, you need to bring your own materials, if you don't have materials, I can help you upgrade an eighth-order artifact to a ninth-order artifact for free! Olaf said.

As soon as Zhang Nian heard that there was an artifact, Zhang Nian's nerves suddenly became active, and he jumped up from the ground in surprise, and shouted loudly: "The city lord is mighty!" ”

"By the way, Lord Castle, what kind of materials can be used to make artifacts, it would be a pity if I missed it." Zhang Nian asked.

"This is a manual on forging materials, you can flip through it if you have nothing to do, and it contains all the materials I know. By the way, 'One Thought of Life and Death', did you get some demon equipment in 'Spiral Hell', it's useless for you to hold these demon equipment, it's better to give it to me, I can give you a one-to-one ratio to exchange it for our human equipment. Olaf said.

Zhang Nian took a booklet sent to him by Olaf, Zhang Nian looked at it curiously, and suddenly heard Olaf say that the useless demon equipment he got could be exchanged for human equipment, Zhang Nian wondered if he had heard it wrong.

"City Lord, what you said is true? What is a one-to-one ratio? Zhang Nian asked suspiciously.

"It's a fourth-order demon equipment, you can exchange it for a fourth-order Terran equipment, a third-order demon equipment, you can change it to a third-order Terran equipment, do you understand if I explain it like this?" Olaf said.

"Understood, understood, can all these demon equipment be replaced!" Zhang Nian took out dozens of pieces of equipment from his backpack.

"Haha, yes, of course you can, I'll let people take back these pieces of your equipment, and then calculate for you, how many Terran equipment can be exchanged, don't worry, I will definitely exchange it with you according to the ratio of one to one, I won't be greedy for you a piece of equipment, if you don't believe it, you can calculate the value of these equipment now." Olaf said.

"City Lord, I believe in your character, I absolutely believe in you, but what I don't understand is, why do you want to collect the equipment of these demons, is it because we kill more demons in the drum? After all, only by killing the demons will the demons' equipment be exposed. Also, City Lord, I still have two Demon skill books here, can these skill books also be exchanged for Terran skill books? Zhang Nian asked.

"Ha,You're really lucky.,Even the skill books of the demons have been obtained.,These skill books of the demons are not the same as the equipment of the demons.,The skills of the demons can also be learned.,And generally speaking,The skills of the demons are more powerful than the skills of the humans.,You still keep such skills for yourself.,No one will use the skill book of the demon to exchange for the skill book of the same level of the human race.,By the way,Release the skills of the demons.,It's no longer the amount of blue that is consumed.,But we need to consume our blood to release.,You pay attention to this.。 Olaf reminded.