For the old man's proposal, Yun Zhan directly shook his head and vetoed, if the big array is lifted, the old man will naturally escape, Xu Hao said that as long as he gets out of trouble, it will inevitably cause countless casualties, and he can't guarantee that he won't be affected by the pond fish.

"Boy!" Seeing that Yun Zhan didn't agree, the old man's face changed, and the flames around him also changed, before it was just a pale yellow like an ordinary flame, but now it turned into light red, and then it changed again, turning into dark red, and then into light blue, blue, and purple, with the change of flame color, the temperature of the flame also rose rapidly.

Even the blood mist that made up the twelve blood souls began to slowly evaporate under such high temperatures.

"Do you know what kind of bead this is, boy?" asked the old man, pointing to the bead behind him.

Yun Zhan shook his head, he had only been in this world for a long time, and he didn't even know a little about this world, so how could he recognize it.

"Forgive me for being a hairy boy, I can't recognize it!" the old man said proudly: "This is the fire spirit bead among the four spirit beads!"

"Four Great Spirit Beads!?" Yun Zhan looked dazed.

"Hmph, the frog at the bottom of the well doesn't even know the four spirit beads!" Seeing Yun Zhan's dazed expression, the old man said lightly: "Since you don't know, the old man doesn't bother to explain to you, but you just need to know a little, that is, there is a Nine Heavens Divine Fire in this fire spirit bead!"

"Nine Heavens Divine Fire!" Looking at the flames that were wrapped around the old man, Yun Zhan showed a shocked expression.

Other Yun Zhan may not know, but I just read the "Sword Pattern Catalog", and about the Nine Heavens Divine Fire, it was mentioned above.

Although the "Sword Pattern Catalogue" mainly talks about sword patterns, it also mentions the other two items of sword casting, materials and fire sources, among which the Nine Heavens Divine Fire is mentioned.

Nine Heavens Divine Fire - Born at the beginning of the opening of heaven and earth, above the nine heavens, the fire is divided into nine layers, the most central layer, comparable to the scorching sun.

"It seems that your kid is quite knowledgeable, since he knows the Nine Heavens Divine Fire, he naturally knows its power, although in the old man's current state, he can only barely urge its sixth layer, the Burning Void Purple Flame, but it is enough to burn your body through the big array!" The old man waved his hand, directly summoned the purple flames around him to his hand, and threatened Yun Zhan.

Although Yun Zhan's body and mind are now integrated into the array, his physical body is still outside the array, if his physical body is destroyed, even if Yun Zhan can survive, he will be trapped in this great array for eternity, so what is the difference between it and death.

"You threaten me!" Yun Zhan said in a deep voice.

"The old man prefers to call this a transaction!" The old man smiled faintly and said: "Look at your age, but you are still a little doll that has not dried up, and the road ahead is still long, and the old man is just a wisp of remnant soul, even if you can get rid of this big array, there are not many days to live, but this deal is earned by you!"

Seeing that Yun Zhan seemed to have some intentions, the old man continued to increase: "You can be sent down by that kid surnamed Xu as an eye, you must have a lot to do with him, you must know how valuable a swordsmith is, if you are willing to agree to the old man's deal, the old man can train you to be a swordsmith!"

"The swordsmith still needs to be cultivated!?" Yun Zhan said disdainfully, Yun Zhan, who had just created the Black Crystal Flying Sword with his own hands, this bargaining chip of the old man was not at all attractive to him.

In Yun Zhan's view, the swordsmith is just a sword caster, although the sword pattern is difficult to make, but Yun Zhan is confident, with the improvement of spiritual power in the future, the condensation of the sword pattern will be faster, and as long as the sword pattern can be improved, it is naturally easy to cast a good sword.

"You are very disdainful!" the old man said coldly: "You think that the kid surnamed Xu, he is also worthy of being called a swordsmith!"

"Take a piece of iron at random, knock it a few times, and then engrave a sword pattern, this can be called a swordsmith!?" The old man's face was full of disdain and contempt: "This can only be called a craftsman at most!"

"The true Sword Forging Grandmaster should be even if it is just an ordinary piece of mortal iron, in their hands, it can be transformed into an indestructible sword!"

The old man looked at Yun Zhan and asked seriously, "Do you know where the sword pattern came from?"

This question really stumped Yun Zhan, although he had read the "Sword Pattern Catalog", but it only recorded the shape of some ordinary sword patterns, as well as the handprints that made them, but there was no record of where the sword patterns came from!

"I forgive you for not knowing!" The old man said seriously: "In fact, the so-called sword pattern is just because in the process of casting the sword, in order to remove the impurities in the metal, the metal needs to be repeatedly forged and beaten, so after the sword is formed, some unique lines will be formed on the sword body, and some people find that the sword with these lines is often much stronger than the one that does not, and over time, this is called the sword pattern!"

"Later, people began to imitate these sword patterns, until they finally formed a sword pattern on the sword body with spiritual power!" The old man said, his palm shook slightly, and the flame in his palm suddenly turned into a flame-type sword pattern: "For example, this can increase the power of sword qi, in fact, the reason why it can increase the power of sword qi is because when casting the sword, the sword body is mixed with the power of fire!"

- The power of fire!

Hearing this word, Yun Zhan was shocked, but he didn't expect that this old man was actually the same as the master of the Heavenly Array, and the two of them actually coincided.

"The power of fire is the most advantageous for killing, so it will enhance the power of the sword qi, but those so-called sword casters don't know why, they just know that the flame-type sword pattern can enhance the power of the sword qi, so they inlay it on the sword body, although this can also enhance the power of the sword qi, but the fire qi contained in the sword body is too little, and with the passage of time, the sword pattern that is engraved in the later stage will slowly become blurred, and within a hundred years, the sword pattern engraved in this inlay will completely lose its effect!"

"The sword is divided into three orders and nine grades, like the kid surnamed Xu, he can only cast a sword and a holy sword at most in a lifetime, but it is never possible to cast a divine sword!" The old man said with respect: "The real sword casting master will not deliberately engrave the sword pattern, because this will lose the future potential of the sword, the sword is alive, it can only be a guide, but it cannot be forced to intervene, so that the real divine sword can be cast!"

- The sword is alive!

Yun Zhan nodded secretly, sure enough, those who have reached the level of the old man will all end up in the same way, he and the master of the Heavenly Array have both discovered that the sword is alive and the sword has essence, but there is a big difference between the two.

This old man said that the way of sword forging is the Tao, and he is obviously also a swordsmith, so he is the one who gives life and essence to the sword.

The master of the Heavenly Array created the "Ten Thousand Swords Technique", and relied on devouring the life and essence of the sword to make himself stronger.

After listening to the old man's sigh, he continued: "The so-called hundred refining into steel, even if it is a piece of mortal iron, after thousands of beatings, it can become a manufacturable material, but the current swordsmiths don't understand this truth, in their opinion, as long as the best sword-casting materials are used, supplemented by sword patterns, a good sword can be cast!"

"In fact, I don't know that this is already a mistake, and it is impossible to forge a truly peerless sword in his lifetime! This has also indirectly led to the fact that there are swords and holy swords on the market, but there are fewer and fewer divine swords!"